roman10
grep is a great tool to search strings. I often use grep to check if a specific process is running or not. For example, we want to check if sshd is running, the command would be,
ps -ax | grep sshd
In my computer, this gives the following output,
755 ? Ss 0:00 /usr/sbin/sshd -D
6175 pts/1 S+ 0:00 grep –color=auto sshd
The first line of output is what we want, but the second line is pesky. It is shown because of we’re using grep to search for sshd.
A simple trick is to use the invert command of grep. This is shown as below,
ps ax | grep -v grep | grep sshd
Now the output is,
755 ? Ss 0:00 /usr/sbin/sshd -D
If you enjoyed this article, please consider sharing it!
or try this
ps ax | grep -m1 sshd