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Top Forums Shell Programming and Scripting If && command giving wrong output Post 302908340 by srkmish on Monday 7th of July 2014 06:08:22 AM
Old 07-07-2014
If && command giving wrong output

Hi All,

I am trying to run a script which will search for 2 strings(stopped,started) in a text file and echo an output depending on below condition

Code:
 
-bash-3.2$ cat trial1.txt
v
ggg
f

Code:
 
-bash-3.2$ cat trial1.sh
VAR9=` grep 'stopped' /tmp/trial1.txt`
VAR10=` grep 'started' /tmp/trial1.txt`
if [ -n $VAR9 ] && [ -z $VAR10 ]
then
    echo "No"
else
   echo "Yes"
fi

The above code should echo "Yes" as VAR9 is definitely null. But it is echoing no.

Please help!
 

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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)
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