RFR [9] sequential operation option for hgforest

[Chris Hegarty]

Sometimes I get a little confused/nervous when trying to push/status/in using 
the hgforest.sh script. The output can be a little confusing as it runs several 
jobs in parallel.

I would like to add an option to support sequential operation of commands. It 
is off by default. The more nervous of us that push using this script can opt 
in, if you like!

diff --git a/common/bin/hgforest.sh b/common/bin/hgforest.sh
--- a/common/bin/hgforest.sh
+++ b/common/bin/hgforest.sh
@@ -29,6 +29,7 @@
 status_output="/dev/stdout"
 qflag="false"
 vflag="false"
+sflag="false"
 while [ $# -gt 0 ]
 do
   case $1 in
@@ -43,6 +44,10 @@
       global_opts="${global_opts} -v"
       ;;
 
+    -s | --sequential )
+      sflag="true"
+      ;;
+
     '--' ) # no more options
       shift; break
       ;;
@@ -63,7 +68,7 @@
 command_args="$@"
 
 usage() {
-      echo "usage: $0 [-q|--quiet] [-v|--verbose] [--] <command> 
[commands...]" > ${status_output}
+      echo "usage: $0 [-q|--quiet] [-v|--verbose] [-s|--sequential] [--] 
<command> [commands...]" > ${status_output}
       exit 1
 }
 
@@ -243,11 +248,15 @@
       ) 2>&1 | sed -e "s@^@${reponame}:   @" > ${status_output}
     ) &
 
-    if [ `expr ${n} '%' ${at_a_time}` -eq 0 ] ; then
+    if [ `expr ${n} '%' ${at_a_time}` -eq 0 -a "${sflag}" = "false" ] ; then
       sleep 2
       echo "Waiting 5 secs before spawning next background command." > 
${status_output}
       sleep 3
     fi
+
+    if [ "${sflag}" = "true" ] ; then
+        wait
+    fi
   done
 fi
 
-Chris.