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Full Discussion: Bash script wont exit?
Top Forums Shell Programming and Scripting Bash script wont exit? Post 302506419 by Aia on Sunday 20th of March 2011 06:53:51 PM
Old 03-20-2011
It might look like it works, but it doesn't

Bash if doesn't work as such. The if gets help from the test program. To make it look more in line with other programing language syntax, the test command has an alias, `[' (open square bracket ), followed by a close bracket `]'. That's why you don't see the test word written all that often.

Your statement should have been
Code:
if [ -n `ps ax | grep Cluster__check.bash | grep -v grep > /dev/null` ]; then
    # do something
fi

Or something similar to it.
 

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LEARN ABOUT V7

zgrep

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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