ansible/rst/modules/lineinfile.rst

lineinfile

0.7

This module will search a file for a line, and ensure that it is present or absent. This is primarily useful when you want to change a single line in a file only. For other cases, see the copy or template modules.

parameter	required	default	choices	comments
state	no	present	present absent	Whether the line should be there or not.
name	yes			The file to modify
insertafter	no	EOF	BOF EOF	Used with state=present. If specified, the line will be inserted after the specified regular expression. Two special values are available; BOF for inserting the line at the beginning of the file, and EOF for inserting the line at the end of the file.
regexp	yes			The regular expression to look for in the file. For state=present, the pattern to replace. For state=absent, the pattern of the line to remove.
line	no			Required for state=present. The line to insert/replace into the file. Must match the value given to regexp.
backup	no			Create a backup file including the timestamp information so you can get the original file back if you somehow clobbered it incorrectly.

lineinfile name=/etc/selinux/config regexp=^SELINUX= line=SELINUX=disabled

lineinfile name=/etc/sudoers state=absent regexp="^%wheel"