On Tue, Jul 13, 2010 at 01:51:31PM -0400, Alex Khesin wrote: > Configuration Information: > Machine: x86_64 > OS: linux-gnu > Compiler: gcc > Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64' > -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-pc-linux-gnu' > -DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' > -DSHELL -DHAVE_CONFIG_H -I. -I../bash -I../bash/include > -I../bash/lib -g -O2 -Wall > uname output: Linux alexk 2.6.32-gg173-generic #gg173 SMP Wed Jun 23 > 05:24:15 UTC 2010 x86_64 GNU/Linux > Machine Type: x86_64-pc-linux-gnu > Bash Version: 4.1 > Patch Level: 5 > Release Status: release > > Description: > > The following script used to work in bash 3.2 but does not work with > bash 4.x (I tried 4.0, 4.1.5, and 4.1.7) > > ------ > #!/bin/bash > > a=$(/bin/cat << EOF | wc -l > a > b > EOF > ) > ----- > > /tmp/bug.sh: line 3: unexpected EOF while looking for matching `)' > /tmp/bug.sh: line 8: syntax error: unexpected end of file > > The following works correctly (changed /bin/cat to cat): > > ------ > #!/bin/bash > > a=$(cat << EOF | wc -l > a > b > EOF > ) > ----- > > and so does this (removed | wc -l): > > ------ > #!/bin/bash > > a=$(/bin/cat << EOF > a > b > EOF > ) > -----
Hmmm ... I would expect that a=$((/bin/cat|wc -l) <<EOF a b EOF ) is more correct. Werner -- "Having a smoking section in a restaurant is like having a peeing section in a swimming pool." -- Edward Burr