How to use variable in sed command

Question

I am trying to delete two lines ( 7 and 8) from a .txt file. For this I am using following code:-

#!/bin/sh
Column="7"
sed '"$Column",8d' myfile.txt > result.txt

on running this script, I am getting this error:-

sed: -e expression #1, char 1: unknown command: `"'

Please tell me how to use variable as a part of sed command.

Using double quotes within single quotes doesn't help, you'll have to keep the double quotes outside the single quotes. — muru, Sep 04 '19 at 11:21
See How can I use variables in the LHS and RHS of a sed substitution? — steeldriver, Sep 04 '19 at 11:21

score 4 · Accepted Answer · answered Sep 04 '19 at 11:19

4

Variables are not expanded in single quotes. Use this:

sed "${Column},8d" myfile.txt > result.txt

answered Sep 04 '19 at 11:19

1 Answers1