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Full Discussion: [: -gt: unary operator expected
Top Forums UNIX for Dummies Questions & Answers [: -gt: unary operator expected Post 302706467 by fotex on Wednesday 26th of September 2012 08:42:59 PM
Old 09-26-2012
[: -gt: unary operator expected
Hi
I have problem with my script.
I dont now why but i don't change anything and script stop working.

this is my code:
Code:
#!/bin/sh
for i in `ps -A | grep pocron.sh | grep -v grep | awk '{print $2}'`
do
        COUNT=$((COUNT+1))
done

ostatnie_wykonanie=`cat porader.log`
aktualna_data=`date +%s`
wynik=$(($aktualna_data - $ostatnie_wykonanie))

if [ $wynik -gt 63 ]
then

if [ $COUNT -z ]
then
./pocron.sh
fi
elif [ $COUNT -gt 1 ]
then
killall pocron.sh
./pocron.sh
fi
exit

when i run script error is:
[: -gt: unary operator expected

on line 18

line 18 is:

Code:
elif [ $COUNT -gt 1 ]

can you help me fix problem?
 

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LEARN ABOUT LINUX

zegrep

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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