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---
module: lineinfile
short_description: Manage lines in text files
description:
- This module ensures a particular line is in a file, or replace an
existing line using a back-referenced regular expression.
- This is primarily useful when you want to change a single line in a file only.
- See the M(replace) module if you want to change multiple, similar lines
or check M(blockinfile) if you want to insert/update/remove a block of lines in a file.
For other cases, see the M(copy) or M(template) modules.
version_added: "0.7"
options:
path:
description:
- The file to modify.
- Before Ansible 2.3 this option was only usable as I(dest), I(destfile) and I(name).
type: path
required: true
aliases: [ dest, destfile, name ]
regexp:
description:
- The regular expression to look for in every line of the file.
- For C(state=present), the pattern to replace if found. Only the last line found will be replaced.
- For C(state=absent), the pattern of the line(s) to remove.
- If the regular expression is not matched, the line will be
added to the file in keeping with C(insertbefore) or C(insertafter)
settings.
- When modifying a line the regexp should typically match both the initial state of
the line as well as its state after replacement by C(line) to ensure idempotence.
- Uses Python regular expressions. See U(http://docs.python.org/2/library/re.html).
type: str
aliases: [ regex ]
version_added: '1.7'
state:
description:
- Whether the line should be there or not.
type: str
choices: [ absent, present ]
default: present
line:
description:
- The line to insert/replace into the file.
- Required for C(state=present).
- If C(backrefs) is set, may contain backreferences that will get
expanded with the C(regexp) capture groups if the regexp matches.
type: str
aliases: [ value ]
backrefs:
description:
- Used with C(state=present).
- If set, C(line) can contain backreferences (both positional and named)
that will get populated if the C(regexp) matches.
- This parameter changes the operation of the module slightly;
C(insertbefore) and C(insertafter) will be ignored, and if the C(regexp)
does not match anywhere in the file, the file will be left unchanged.
- If the C(regexp) does match, the last matching line will be replaced by
the expanded line parameter.
type: bool
default: no
version_added: "1.1"
insertafter:
description:
- Used with C(state=present).
- If specified, the line will be inserted after the last match of specified regular expression.
- If the first match is required, use(firstmatch=yes).
- A special value is available; C(EOF) for inserting the line at the end of the file.
- If specified regular expression has no matches, EOF will be used instead.
- If C(insertbefore) is set, default value C(EOF) will be ignored.
- If regular expressions are passed to both C(regexp) and C(insertafter), C(insertafter) is only honored if no match for C(regexp) is found.
- May not be used with C(backrefs) or C(insertbefore).
type: str
choices: [ EOF, '*regex*' ]
default: EOF
insertbefore:
description:
- Used with C(state=present).
- If specified, the line will be inserted before the last match of specified regular expression.
- If the first match is required, use C(firstmatch=yes).
- A value is available; C(BOF) for inserting the line at the beginning of the file.
- If specified regular expression has no matches, the line will be inserted at the end of the file.
- If regular expressions are passed to both C(regexp) and C(insertbefore), C(insertbefore) is only honored if no match for C(regexp) is found.
- May not be used with C(backrefs) or C(insertafter).
type: str
choices: [ BOF, '*regex*' ]
version_added: "1.1"
create:
description:
- Used with C(state=present).
- If specified, the file will be created if it does not already exist.
- By default it will fail if the file is missing.
type: bool
default: no
backup:
description:
- Create a backup file including the timestamp information so you can
get the original file back if you somehow clobbered it incorrectly.
type: bool
default: no
firstmatch:
description:
- Used with C(insertafter) or C(insertbefore).
- If set, C(insertafter) and C(insertbefore) will work with the first line that matches the given regular expression.
type: bool
default: no
version_added: "2.5"
others:
description:
- All arguments accepted by the M(file) module also work here.
type: str
extends_documentation_fragment:
- files
- validate
notes:
- As of Ansible 2.3, the I(dest) option has been changed to I(path) as default, but I(dest) still works as well.
seealso:
- module: blockinfile
- module: copy
- module: file
- module: replace
- module: template
- module: win_lineinfile
author:
- Daniel Hokka Zakrissoni (@dhozac)
- Ahti Kitsik (@ahtik)
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# NOTE: Before 2.3, option 'dest', 'destfile' or 'name' was used instead of 'path'
- name: Ensure SELinux is set to enforcing mode
lineinfile:
path: /etc/selinux/config
regexp: '^SELINUX='
line: SELINUX=enforcing
- name: Make sure group wheel is not in the sudoers configuration
lineinfile:
path: /etc/sudoers
state: absent
regexp: '^%wheel'
- name: Replace a localhost entry with our own
lineinfile:
path: /etc/hosts
regexp: '^127\.0\.0\.1'
line: 127.0.0.1 localhost
owner: root
group: root
mode: '0644'
- name: Ensure the default Apache port is 8080
lineinfile:
path: /etc/httpd/conf/httpd.conf
regexp: '^Listen '
insertafter: '^#Listen '
line: Listen 8080
- name: Ensure we have our own comment added to /etc/services
lineinfile:
path: /etc/services
regexp: '^# port for http'
insertbefore: '^www.*80/tcp'
line: '# port for http by default'
- name: Add a line to a file if the file does not exist, without passing regexp
lineinfile:
path: /tmp/testfile
line: 192.168.1.99 foo.lab.net foo
create: yes
# NOTE: Yaml requires escaping backslashes in double quotes but not in single quotes
- name: Ensure the JBoss memory settings are exactly as needed
lineinfile:
path: /opt/jboss-as/bin/standalone.conf
regexp: '^(.*)Xms(\\d+)m(.*)$'
line: '\1Xms${xms}m\3'
backrefs: yes
# NOTE: Fully quoted because of the ': ' on the line. See the Gotchas in the YAML docs.
- name: Validate the sudoers file before saving
lineinfile:
path: /etc/sudoers
state: present
regexp: '^%ADMIN ALL='
line: '%ADMIN ALL=(ALL) NOPASSWD: ALL'
validate: /usr/sbin/visudo -cf %s
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