Re: [edk2] [PATCH] Convert PosixLike scripts to sh, reduce duplication and fix some bugs

Mon, 25 Feb 2019 19:51:10 -0800

Thanks for the review. I have a macOS system, so I'll verify future changes work there too.
The problem I'm trying to solve is to make it easier to get started building EDK2 under FreeBSD. Currently it needs symlinks in BaseTools/Bin/FreeBSD-amd64 for gcc, ld, make, objcopy and python, and obviously needs bash installed. Since there seems to be relatively little shell code in the repo, I was thinking that avoiding the dependency on bash might be a relatively easy way to reduce the steps needed to get things working. 


I'll try and remember about PatchCheck.py too.


--

Rebecca


On 2/25/19 8:11 PM, Feng, Bob C wrote:

Hi Rebecca,

I like the change of moving duplicated code into common files and the bug fix 
looks good.

I tested this patch on our CI system, it break the build on MacOS. There is no 
realpath command on MacOs shell.

For the patch itself, it need to pass the check of 
BaseTools/Scripts/PatchCheck.py.

Is there actual problem that need to be resolved by using sh instead of bash?

Thanks,
Bob

-----Original Message-----
From: edk2-devel [mailto:edk2-devel-boun...@lists.01.org] On Behalf Of Rebecca 
Cran via edk2-devel
Sent: Friday, February 22, 2019 1:13 PM
To: edk2-devel@lists.01.org
Subject: [edk2] [PATCH] Convert PosixLike scripts to sh, reduce duplication and 
fix some bugs

Since the scripts in the PosixLike directory are very simple, convert them to 
use /bin/sh, and move duplicated code into common files (one for python 
scripts, one for C binaries).

Fix some bugs in edksetup.sh and BuildEnv: `test` uses single equals instead of 
double equals, and should have a space before the ending bracket. Fix some 
indentation, and if the user runs edksetup.sh with --help etc., quit after 
displaying the help message.
---
  BaseTools/BinWrappers/PosixLike/BPDG          | 15 ++--------
  BaseTools/BinWrappers/PosixLike/Brotli        | 30 ++-----------------
  .../BinWrappers/PosixLike/BrotliCompress      | 12 ++++----
  BaseTools/BinWrappers/PosixLike/DevicePath    | 30 ++-----------------
  BaseTools/BinWrappers/PosixLike/Ecc           | 15 ++--------
  BaseTools/BinWrappers/PosixLike/EfiRom        | 30 ++-----------------
  BaseTools/BinWrappers/PosixLike/GenCrc32      | 30 ++-----------------
  BaseTools/BinWrappers/PosixLike/GenDepex      | 15 ++--------
  BaseTools/BinWrappers/PosixLike/GenFds        | 15 ++--------
  BaseTools/BinWrappers/PosixLike/GenFfs        | 30 ++-----------------
  BaseTools/BinWrappers/PosixLike/GenFv         | 30 ++-----------------
  BaseTools/BinWrappers/PosixLike/GenFw         | 30 ++-----------------
  .../BinWrappers/PosixLike/GenPatchPcdTable    | 15 ++--------
  BaseTools/BinWrappers/PosixLike/GenSec        | 30 ++-----------------
  .../BinWrappers/PosixLike/GenerateCapsule     | 15 ++--------
  BaseTools/BinWrappers/PosixLike/LzmaCompress  | 30 ++-----------------
  .../BinWrappers/PosixLike/LzmaF86Compress     |  2 +-
  BaseTools/BinWrappers/PosixLike/PatchPcdValue | 15 ++--------
  BaseTools/BinWrappers/PosixLike/Pkcs7Sign     | 15 ++--------
  .../PosixLike/Rsa2048Sha256GenerateKeys       | 15 ++--------
  .../BinWrappers/PosixLike/Rsa2048Sha256Sign   | 15 ++--------
  BaseTools/BinWrappers/PosixLike/Split         | 30 ++-----------------
  BaseTools/BinWrappers/PosixLike/TargetTool    | 15 ++--------
  BaseTools/BinWrappers/PosixLike/TianoCompress | 30 ++-----------------
  BaseTools/BinWrappers/PosixLike/Trim          | 15 ++--------
  BaseTools/BinWrappers/PosixLike/UPT           | 15 ++--------
  BaseTools/BinWrappers/PosixLike/VfrCompile    | 30 ++-----------------
  BaseTools/BinWrappers/PosixLike/VolInfo       | 30 ++-----------------
  BaseTools/BinWrappers/PosixLike/build         | 15 ++--------
  BaseTools/BinWrappers/PosixLike/common.sh     | 12 ++++++++
  BaseTools/BinWrappers/PosixLike/commonbin.sh  | 28 +++++++++++++++++
  BaseTools/BuildEnv                            |  3 +-
  edksetup.sh                                   | 12 ++++----
  33 files changed, 110 insertions(+), 559 deletions(-)  create mode 100644 
BaseTools/BinWrappers/PosixLike/common.sh
  create mode 100644 BaseTools/BinWrappers/PosixLike/commonbin.sh

diff --git a/BaseTools/BinWrappers/PosixLike/BPDG 
b/BaseTools/BinWrappers/PosixLike/BPDG
index c894384908..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/BPDG
+++ b/BaseTools/BinWrappers/PosixLike/BPDG
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh

  
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python -if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then

-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" -m $cmd.$cmd "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/Brotli 
b/BaseTools/BinWrappers/PosixLike/Brotli
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/Brotli
+++ b/BaseTools/BinWrappers/PosixLike/Brotli
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ] -then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ] -then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ] -then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh

  
+. "$(dirname "$(realpath "$0")")/commonbin.sh"

diff --git a/BaseTools/BinWrappers/PosixLike/BrotliCompress 
b/BaseTools/BinWrappers/PosixLike/BrotliCompress
index ea86705a28..7cb26a3659 100755
--- a/BaseTools/BinWrappers/PosixLike/BrotliCompress
+++ b/BaseTools/BinWrappers/PosixLike/BrotliCompress
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
  #
  # This script will exec Brotli tool with -e/-d options.
  #
@@ -20,21 +20,21 @@ do
      -e)
        ;;
      -d)
-      ARGS+="$1 "
+      ARGS="$ARGS $1"
        ;;
      -o|-g)
-      ARGS+="$1 $2 "
+      ARGS="$ARGS $1 $2"
        shift
        ;;
      -q)
-      QLT="$1 $2 "
+      QLT="$1 $2"
        shift
        ;;
      *)
-      ARGS+="$1 "
+      ARGS="$ARGS $1"
        ;;
    esac
    shift
  done

  
-exec Brotli $QLT $ARGS

+exec "$(dirname "$0")/Brotli" $QLT $ARGS
diff --git a/BaseTools/BinWrappers/PosixLike/DevicePath 
b/BaseTools/BinWrappers/PosixLike/DevicePath
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/DevicePath
+++ b/BaseTools/BinWrappers/PosixLike/DevicePath
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ] -then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ] -then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ] -then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh

  
+. "$(dirname "$(realpath "$0")")/commonbin.sh"

diff --git a/BaseTools/BinWrappers/PosixLike/Ecc 
b/BaseTools/BinWrappers/PosixLike/Ecc
index 15edf52106..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/Ecc
+++ b/BaseTools/BinWrappers/PosixLike/Ecc
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh

  
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python -if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then

-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" -m $cmd.EccMain "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/EfiRom 
b/BaseTools/BinWrappers/PosixLike/EfiRom
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/EfiRom
+++ b/BaseTools/BinWrappers/PosixLike/EfiRom
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ] -then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ] -then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ] -then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh

  
+. "$(dirname "$(realpath "$0")")/commonbin.sh"

diff --git a/BaseTools/BinWrappers/PosixLike/GenCrc32 
b/BaseTools/BinWrappers/PosixLike/GenCrc32
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/GenCrc32
+++ b/BaseTools/BinWrappers/PosixLike/GenCrc32
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ] -then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ] -then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ] -then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh

  
+. "$(dirname "$(realpath "$0")")/commonbin.sh"

diff --git a/BaseTools/BinWrappers/PosixLike/GenDepex 
b/BaseTools/BinWrappers/PosixLike/GenDepex
index 183cf58224..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/GenDepex
+++ b/BaseTools/BinWrappers/PosixLike/GenDepex
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh

  
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python -if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then

-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/AutoGen/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/GenFds 
b/BaseTools/BinWrappers/PosixLike/GenFds
index c894384908..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/GenFds
+++ b/BaseTools/BinWrappers/PosixLike/GenFds
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh

  
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python -if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then

-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" -m $cmd.$cmd "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/GenFfs 
b/BaseTools/BinWrappers/PosixLike/GenFfs
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/GenFfs
+++ b/BaseTools/BinWrappers/PosixLike/GenFfs
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ] -then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ] -then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ] -then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh

  
+. "$(dirname "$(realpath "$0")")/commonbin.sh"

diff --git a/BaseTools/BinWrappers/PosixLike/GenFv 
b/BaseTools/BinWrappers/PosixLike/GenFv
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/GenFv
+++ b/BaseTools/BinWrappers/PosixLike/GenFv
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ] -then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ] -then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ] -then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh

  
+. "$(dirname "$(realpath "$0")")/commonbin.sh"

diff --git a/BaseTools/BinWrappers/PosixLike/GenFw 
b/BaseTools/BinWrappers/PosixLike/GenFw
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/GenFw
+++ b/BaseTools/BinWrappers/PosixLike/GenFw
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ] -then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ] -then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ] -then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh

  
+. "$(dirname "$(realpath "$0")")/commonbin.sh"

diff --git a/BaseTools/BinWrappers/PosixLike/GenPatchPcdTable 
b/BaseTools/BinWrappers/PosixLike/GenPatchPcdTable
index f3770eed42..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/GenPatchPcdTable
+++ b/BaseTools/BinWrappers/PosixLike/GenPatchPcdTable
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh

  
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python -if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then

-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$cmd/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/GenSec 
b/BaseTools/BinWrappers/PosixLike/GenSec
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/GenSec
+++ b/BaseTools/BinWrappers/PosixLike/GenSec
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ] -then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ] -then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ] -then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh

  
+. "$(dirname "$(realpath "$0")")/commonbin.sh"

diff --git a/BaseTools/BinWrappers/PosixLike/GenerateCapsule 
b/BaseTools/BinWrappers/PosixLike/GenerateCapsule
index 023048c61d..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/GenerateCapsule
+++ b/BaseTools/BinWrappers/PosixLike/GenerateCapsule
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh

  
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python -if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then

-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/Capsule/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/LzmaCompress 
b/BaseTools/BinWrappers/PosixLike/LzmaCompress
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/LzmaCompress
+++ b/BaseTools/BinWrappers/PosixLike/LzmaCompress
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ] -then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ] -then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ] -then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh

  
+. "$(dirname "$(realpath "$0")")/commonbin.sh"

diff --git a/BaseTools/BinWrappers/PosixLike/LzmaF86Compress 
b/BaseTools/BinWrappers/PosixLike/LzmaF86Compress
index 078cb1e21d..4049f9f596 100755
--- a/BaseTools/BinWrappers/PosixLike/LzmaF86Compress
+++ b/BaseTools/BinWrappers/PosixLike/LzmaF86Compress
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
  #
  # This script will exec LzmaCompress tool with --f86 option that enables 
converter for x86 code.
  #
diff --git a/BaseTools/BinWrappers/PosixLike/PatchPcdValue 
b/BaseTools/BinWrappers/PosixLike/PatchPcdValue
index f3770eed42..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/PatchPcdValue
+++ b/BaseTools/BinWrappers/PosixLike/PatchPcdValue
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh

  
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python -if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then

-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$cmd/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/Pkcs7Sign 
b/BaseTools/BinWrappers/PosixLike/Pkcs7Sign
index f3770eed42..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/Pkcs7Sign
+++ b/BaseTools/BinWrappers/PosixLike/Pkcs7Sign
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh

  
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python -if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then

-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$cmd/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256GenerateKeys 
b/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256GenerateKeys
index ea71c7c61a..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256GenerateKeys
+++ b/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256GenerateKeys
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh

  
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python -if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then

-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/Rsa2048Sha256Sign/$cmd.py" 
"$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256Sign 
b/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256Sign
index f3770eed42..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256Sign
+++ b/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256Sign
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh

  
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python -if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then

-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$cmd/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/Split 
b/BaseTools/BinWrappers/PosixLike/Split
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/Split
+++ b/BaseTools/BinWrappers/PosixLike/Split
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ] -then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ] -then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ] -then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh

  
+. "$(dirname "$(realpath "$0")")/commonbin.sh"

diff --git a/BaseTools/BinWrappers/PosixLike/TargetTool 
b/BaseTools/BinWrappers/PosixLike/TargetTool
index f3770eed42..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/TargetTool
+++ b/BaseTools/BinWrappers/PosixLike/TargetTool
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh

  
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python -if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then

-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$cmd/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/TianoCompress 
b/BaseTools/BinWrappers/PosixLike/TianoCompress
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/TianoCompress
+++ b/BaseTools/BinWrappers/PosixLike/TianoCompress
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ] -then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ] -then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ] -then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh

  
+. "$(dirname "$(realpath "$0")")/commonbin.sh"

diff --git a/BaseTools/BinWrappers/PosixLike/Trim 
b/BaseTools/BinWrappers/PosixLike/Trim
index 1dd28e9662..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/Trim
+++ b/BaseTools/BinWrappers/PosixLike/Trim
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh

  
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python -if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then

-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why 
$0 is not a good choice here -dir=$(dirname "$full_cmd") -exe=$(basename 
"$full_cmd")
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$exe/$exe.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/UPT 
b/BaseTools/BinWrappers/PosixLike/UPT
index f3770eed42..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/UPT
+++ b/BaseTools/BinWrappers/PosixLike/UPT
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh

  
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python -if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then

-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$cmd/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/VfrCompile 
b/BaseTools/BinWrappers/PosixLike/VfrCompile
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/VfrCompile
+++ b/BaseTools/BinWrappers/PosixLike/VfrCompile
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ] -then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ] -then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ] -then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh

  
+. "$(dirname "$(realpath "$0")")/commonbin.sh"

diff --git a/BaseTools/BinWrappers/PosixLike/VolInfo 
b/BaseTools/BinWrappers/PosixLike/VolInfo
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/VolInfo
+++ b/BaseTools/BinWrappers/PosixLike/VolInfo
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ] -then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ] -then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ] -then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh

  
+. "$(dirname "$(realpath "$0")")/commonbin.sh"

diff --git a/BaseTools/BinWrappers/PosixLike/build 
b/BaseTools/BinWrappers/PosixLike/build
index f3770eed42..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/build
+++ b/BaseTools/BinWrappers/PosixLike/build
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh

  
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python -if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then

-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a 
discussion of why $0 is not a good choice here -dir=$(dirname "$full_cmd") 
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$cmd/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/common.sh 
b/BaseTools/BinWrappers/PosixLike/common.sh
new file mode 100644
index 0000000000..63a45bb54c
--- /dev/null
+++ b/BaseTools/BinWrappers/PosixLike/common.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+# If a ${PYTHON_COMMAND} command is available, use it in preference to
+python if command -v "${PYTHON_COMMAND}" >/dev/null 2>&1; then
+    python_exe=${PYTHON_COMMAND}
+fi
+
+dir="$(dirname "$(realpath "$0")")"
+cmd=${0##*/}
+
+export PYTHONPATH="${dir}/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
+exec "${python_exe:-python}" "${dir}/../../Source/Python/$cmd/${cmd}.py" "$@"
diff --git a/BaseTools/BinWrappers/PosixLike/commonbin.sh 
b/BaseTools/BinWrappers/PosixLike/commonbin.sh
new file mode 100644
index 0000000000..948def9ce7
--- /dev/null
+++ b/BaseTools/BinWrappers/PosixLike/commonbin.sh
@@ -0,0 +1,28 @@
+#!/bin/sh
+
+dir="$(dirname "$(realpath "$0")")"
+cmd=${0##*/}
+
+if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ]
+then
+  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
+elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ] then
+  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
+  then
+    echo "BaseTools C Tool binary was not found ($cmd)"
+    echo "You may need to run:"
+    echo "  make -C $EDK_TOOLS_PATH/Source/C"
+  else
+    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
+  fi
+elif [ -e "$dir/../../Source/C/bin/$cmd" ] then
+  exec "$dir/../../Source/C/bin/$cmd" "$@"
+else
+  echo "Unable to find the real '$cmd' to run"
+  echo "This message was printed by"
+  echo "  $0"
+  exit 127
+fi
+
diff --git a/BaseTools/BuildEnv b/BaseTools/BuildEnv index 
ff0c5115a5..b321828471 100755
--- a/BaseTools/BuildEnv
+++ b/BaseTools/BuildEnv
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
  ## @file
  # Setup the environment for unix-like systems running a bash-like shell.
  # This file must be "sourced" not merely executed. For example: ". 
edksetup.sh"
@@ -136,7 +137,7 @@ SetEdkToolsPath() {
    #
    # Try $PACKAGES_PATH
    #
-  if [ -n "$PACKAGES_PATH"]
+  if [ -n "$PACKAGES_PATH" ]
    then
      PATH_LIST=${PACKAGES_PATH//:/ }
      for DIR in $PATH_LIST
diff --git a/edksetup.sh b/edksetup.sh
index a8897d10f8..4457be6e96 100755
--- a/edksetup.sh
+++ b/edksetup.sh
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
  #
  # Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>  # 
Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR> @@ -115,8 +116,8 @@ function 
SetupPython3()  {
    if [ $origin_version ];then
        origin_version=
-    fi
-    for python in $(whereis python3)
+  fi
+  for python in $(whereis python3)
      do
        python=$(echo $python | grep "[[:digit:]]$" || true)
        python_version=${python##*python} @@ -133,8 +134,8 @@ function 
SetupPython3()
          origin_version=$python_version
          export PYTHON_COMMAND=$python
        fi
-    done
-    return 0
+  done
+  return 0
  }

  
  function SetupPython()

@@ -148,7 +149,7 @@ function SetupPython()
      fi
    fi

  
-  if [ $PYTHON3_ENABLE ] && [ $PYTHON3_ENABLE == TRUE ]

+  if [ $PYTHON3_ENABLE ] && [ $PYTHON3_ENABLE = TRUE ]
    then
      SetupPython3
    fi
@@ -204,6 +205,7 @@ do
      ;;
      -?|-h|--help|*)
        HelpMsg
+      return 0
        break
      ;;
    esac
--
2.20.1

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