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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 OSX

topsyscall

topsyscall(1m)							   USER COMMANDS						    topsyscall(1m)

NAME

       topsyscall - top syscalls by syscall name. Uses DTrace.

SYNOPSIS

       topsyscall [-Cs] [interval [count]]

DESCRIPTION

       This  program  continually prints a report of the top system calls, and refreshes the display every 1 second or as specified at the command
       line.

       Since this uses DTrace, only users with root privileges can run this command.

OPTIONS

       -C     don't clear the screen

       -s     print per second values

EXAMPLES

       Default output, 1 second updates,
	      # topsyscall

       Print every 5 seconds,
	      # topsyscall 5

       Print a scrolling output,
	      # topsyscall -C

FIELDS

       load avg
	      load averages, see uptime(1)

       syscalls
	      total syscalls in this interval

       syscalls/s
	      syscalls per second

       SYSCALL
	      system call name

       COUNT  total syscalls in this interval

       COUNT/s
	      syscalls per second

DOCUMENTATION

       See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
       bose descriptions explaining the output.

EXIT

       topsyscall will run until Ctrl-C is hit, or the specified interval is reached.

AUTHOR

       Brendan Gregg [Sydney, Australia]

SEE ALSO

       dtrace(1M), prstat(1M)

version 0.90							   Jun 13, 2005 						    topsyscall(1m)
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