I have a bash script abcd.sh,in which I want to kill this command(/usr/local/bin/wrun 'uptime;ps -elf|grep httpd|wc -l;free -m;mpstat') after 5 sec but in this script it kill sleep command after 5 second.
#!/bin/sh
/usr/local/bin/wrun 'uptime;ps -elf|grep httpd|wc -l;free -m;mpstat' &
sleep 5
kill $! 2>/dev/null && echo "Killed command on time out"
Try
#!/bin/sh
/usr/local/bin/wrun 'uptime;ps -elf|grep httpd|wc -l;free -m;mpstat' &
pid=$!
sleep 5
kill $pid 2>/dev/null && echo "Killed command on time out"
UPDATE:
A working example (no special commands)
#!/bin/sh
set +x
ping -i 1 google.de &
pid=$!
echo $pid
sleep 5
echo $pid
kill $pid 2>/dev/null && echo "Killed command on time out"
timeout is arguably a better option.
ping)/usr/local/bin/wrun 'uptime;ps -elf|grep httpd|wc -l;free -m;mpstat' resume its working.After 5 sec it shows the echo message and resume its working.pid like it is in the example that we can see if kill calls the right pid. Maybe you need to call kill -9 $pidYou should use instead the timeout(1) command:
timeout 5 /usr/local/bin/wrun \
'uptime;ps -elf|grep httpd|wc -l;free -m;mpstat'
timeout. Sadly, timeout was only introduced in coreutils 7 which means it's not available on e.g. CentOS 5.
Rather then try and construct your own mechanism why not make use of the timeout command.
$ date; timeout 5 sleep 100; date
Tue Apr 1 03:19:56 EDT 2014
Tue Apr 1 03:20:01 EDT 2014
In the above you can see that timeout has terminated the sleep 100 after only 5 seconds (aka. the duration).
$ timeout 5 /usr/local/bin/wrun \
'uptime;ps -elf|grep httpd|wc -l;free -m;mpstat'
Try this:
#!/bin/sh
/usr/local/bin/wrun 'uptime;ps -elf|grep httpd|wc -l;free -m;mpstat' &
sleep 5
pkill "wrun" && echo "Killed command on time out"
This is because the variable $! contains the PID of the most recent background command. And this background command is in your case sleep 5. This should work:
#!/bin/sh
/usr/local/bin/wrun 'uptime;ps -elf|grep httpd|wc -l;free -m;mpstat' &
PID=$!
sleep 5
kill $PID 2>/dev/null && echo "Killed command on time out"
/usr/local/bin/wrun? Is it this gist.github.com/orgoj/5326037 ?You could use something like:
#!/bin/sh
/usr/local/bin/wrun 'uptime;ps -elf|grep httpd|wc -l;free -m;mpstat' &
PID=`ps -ef | grep /usr/local/bin/wrun | awk '{print $1}'`
sleep 5
kill $PID 2>/dev/null && echo "Killed command on time out"
