11-03-2008
Passing a regexp to grep via a shell script
Hello,
I have the output of ls -l stored in a text file called "files.txt".
-rwx------ 1 user1 dev 130 Sep 21 16:14 sc1.sh
-rwxr----- 1 user1 dev 10328 Sep 29 20:11 sc10.sh
-rwxr----- 1 user1 dev 9984 Sep 30 15:33 sc11.sh
-rwxr----- 1 user1 dev 9987 Oct 1 10:05 sc12.sh
-rwx------ 1 user1 dev 3215 Sep 21 17:15 sc2.sh
-rwx------ 1 user1 dev 3215 Sep 22 10:04 sc3.sh
-rwxr----- 1 user1 dev 2174 Sep 22 13:34 sc4.sh
-rwxr----- 1 user1 dev 2837 Sep 22 16:35 sc5.sh
-rwxr----- 1 user1 dev 5923 Sep 23 11:51 sc6.sh
-rwxr----- 1 user1 dev 5995 Sep 23 13:20 sc7.sh
-rwxr----- 1 user1 dev 6458 Sep 24 13:37 sc8.sh
-rwxr----- 1 user1 dev 8375 Sep 26 10:53 sc9.sh
I need to extract the filename and filesize, viz column 9 & 5 for all files matching a filename pattern into another file.
I have tried the following shell script.
set -f
FILE_EXT=*.sh
awk '{print $9" "$5}' files.txt | grep "$FILE_EXT"
It does not print the rows with the patterns. The pattern used for grep through the shell script needs to be configurable via the command line.
Can anybody help me with this.
Thanks.
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GZEXE(1) General Commands Manual GZEXE(1)
NAME
gzexe - compress executable files in place
SYNOPSIS
gzexe name ...
DESCRIPTION
The gzexe utility allows you to compress executables in place and have them automatically uncompress and execute when you run them (at a
penalty in performance). For example if you execute ``gzexe /usr/bin/gdb'' it will create the following two files:
-rwxr-xr-x 1 root root 1026675 Jun 7 13:53 /usr/bin/gdb
-rwxr-xr-x 1 root root 2304524 May 30 13:02 /usr/bin/gdb~
/usr/bin/gdb~ is the original file and /usr/bin/gdb is the self-uncompressing executable file. You can remove /usr/bin/gdb~ once you are
sure that /usr/bin/gdb works properly.
This utility is most useful on systems with very small disks.
OPTIONS
-d Decompress the given executables instead of compressing them.
SEE ALSO
gzip(1), znew(1), zmore(1), zcmp(1), zforce(1)
CAVEATS
The compressed executable is a shell script. This may create some security holes. In particular, the compressed executable relies on the
PATH environment variable to find gzip and some standard utilities (basename, chmod, ln, mkdir, mktemp, rm, sleep, and tail).
BUGS
gzexe attempts to retain the original file attributes on the compressed executable, but you may have to fix them manually in some cases,
using chmod or chown.
GZEXE(1)