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Full Discussion: My first shot at variables
Top Forums Shell Programming and Scripting My first shot at variables Post 302233340 by era on Sunday 7th of September 2008 07:42:35 AM
Old 09-07-2008
It's still not correct, the value of $? is 0 for match and 1 for no match after grep -c

The construct you are looking for is backticks.

Code:
m=`grep -c MGHS /home/jake/Scripts/wireless.txt`
o=`grep -c NMU /home/jake/Scripts/wireless.txt`

Those are grave accents (ASCII 96), not regular straight apostrophes.

In other news, the parentheses around the ping in the if are superfluous, and the & you use in a few places means "background this process"; you want "&&" which means "and if the previous command was successful, also run ..." or perhaps just semicolon, which is basically equivalent to newline.
 

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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 is used to invoke the grep on compress'ed or gzip'ed files. All options specified are passed directly to grep. If no file is speci- fied, 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 zgrep is invoked as zegrep or zfgrep then egrep or fgrep is used instead of grep. If the GREP environment variable is set, zgrep uses it as the grep program to be invoked. For example: for sh: GREP=fgrep zgrep string files for csh: (setenv GREP fgrep; zgrep string files) AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), egrep(1), fgrep(1), zdiff(1), zmore(1), znew(1), zforce(1), gzip(1), gzexe(1) ZGREP(1)
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