01-06-2008
a begginers question
hey
i'm very much new to unix
i'm trying to write a script which goes through given files and checks if the files begin with # and if they are executable
my problem is that when i try to check the result of my query i'm getting nada
let me explain :
when i write
if (`file $i | grep 'executable' `=~ ?*)
or
if (`head -1 $i | grep '^#' ` != ``)
i'm getting weird results
i'm guessing my sintax is way off here...
any suggestions on the proper syntax for checking if the return value of this query isn't NULL...?
thanks in advance
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ZGREP(1) General Commands Manual ZGREP(1)
NAME
zgrep - search possibly compressed files for a regular expression
SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename...
DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code:
(-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the
standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep.
If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.
EXIT CODE
2 - An option that is not supported was specified.
AUTHOR
Charles Levert (charles@comm.polymtl.ca)
SEE ALSO
grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)
ZGREP(1)