Knowledge Base

Deleting Lines in a Linux Sed File

You can use the information below to delete lines from a file on Linux.

NOTE: No operation is performed without using the e-i parameter with sed, only the output sample is shown.

sed -i ....

To delete empty lines:

sed '/^$/d' /home/umut/test.txt

 

To delete the specified row:

For example, let's delete the 3rd line

sed '3d' /home/teknosos/test.txt

 

To delete lines containing the desired letters.

For example, let's delete the lines containing virtualmin

sed '/virtualmin/d' /etc/apt/source.list

 

To delete lines starting with the desired letters:

For example, let's delete the lines starting with ubuntu

sed '/^ubuntu/d' /etc/apt/source.list

Delete lines ending with the desired letters

For example, let's delete the lines ending with centos

sed '/centos$/d' /etc/apt/source.list