[bash] Store output of sed into a variable

I want to store the second line of my file into a variable, so I am doing this:

sed -n '2p' myfile

I wish to store the output of the sed command into a variable named line.

What is the correct syntax to do this?

This question is related to bash

The answer is


In general,

variable=$(command)

or

variable=`command`

The latter one is the old syntax, prefer $(command).

Note: variable = .... means execute the command variable with the first argument =, the second ....


To store the third line into a variable, use below syntax:

variable=`echo "$1" | sed '3q;d' urfile`

To store the changed line into a variable, use below syntax: variable=echo 'overflow' | sed -e "s/over/"OVER"/g" output:OVERflow


line=`sed -n 2p myfile`
echo $line