I am running below script :
#!/bin/bash ps ax | grep -q [v]arnish if [ $? -eq 0 ];then echo varnish is running... exit 0 else echo "Critical : varnish is not running " exit 2 fi
The output is like ::
[[email protected] ~]# sh -x check_varnish_pro.sh + ps ax + grep -q '[v]arnish' + '[' 0 -eq 0 ']' + echo varnish is running... varnish is running... + exit 0
When I run same in command line I am getting exit status as 1:
[[email protected] ~]# ps ax | grep -q [v]arnish; echo $? 1
The case is like varnish is not installed in the server. This script works fine in a server where varnish is installed.
Why different exit status when run using script and command line? How to improve this script?
When you run a script named
check_varnish_pro.sh the test
ps ax | grep -q [v]arnish
is successful because there is a script named