My question is, when we type a command with grep in terminal we get output along with the title:
For example:
lscpu | grep MHz Will output:
CPU MHz: 1216.851 But what if I only want:
1216.851 As the output? Is there any other command to perform this task?
While there are other ways, the most straightforward would probably be awk:
$ lscpu | grep MHz | awk '{print $3}' 2494.038 Or:
$ lscpu | grep MHz | awk '{print $NF}' 2494.038 $3 represents the third field in the output (separated by any amount of whitespace). $NF represents the LAST field in the output, no matter how many fields there are.
You can also skip grep entirely and just do it all with awk:
$ lscpu | awk '/MHz/ { print $NF; exit }' 2494.038 As @glenn jackman pointed out, GNU grep can also do this:
lscpu | grep --color=never -oP 'MHz:\s+\K.*' But the other examples above are POSIX-friendly (although systems that have lscpu probably also have GNU grep).
lscpu | grep -oP 'MHz:\s+\K.*'
awk, also seecutandsed.