ansible.builtin.replace – Replace all instances of a particular string in a file using a back-referenced regular expression¶
This module is part of
ansible-core and included in all Ansible
installations. In most cases, you can use the short module name
replace even without specifying the
However, we recommend you use the FQCN for easy linking to the module
documentation and to avoid conflicting with other collections that may have
the same module name.
New in version 1.6: of ansible.builtin
This module will replace all instances of a pattern within a file.
It is up to the user to maintain idempotence by ensuring that the same pattern would never match any replacements made.
As of Ansible 2.3, the dest option has been changed to path as default, but dest still works as well.
As of Ansible 2.7.10, the combined use of before and after works properly. If you were relying on the previous incorrect behavior, you may be need to adjust your tasks. See https://github.com/ansible/ansible/issues/31354 for details.
Option follow has been removed in Ansible 2.5, because this module modifies the contents of the file so follow=no doesn’t make sense.
- name: Before Ansible 2.3, option 'dest', 'destfile' or 'name' was used instead of 'path' ansible.builtin.replace: path: /etc/hosts regexp: '(\s+)old\.host\.name(\s+.*)?$' replace: '\1new.host.name\2' - name: Replace after the expression till the end of the file (requires Ansible >= 2.4) ansible.builtin.replace: path: /etc/apache2/sites-available/default.conf after: 'NameVirtualHost [*]' regexp: '^(.+)$' replace: '# \1' - name: Replace before the expression till the begin of the file (requires Ansible >= 2.4) ansible.builtin.replace: path: /etc/apache2/sites-available/default.conf before: '# live site config' regexp: '^(.+)$' replace: '# \1' # Prior to Ansible 2.7.10, using before and after in combination did the opposite of what was intended. # see https://github.com/ansible/ansible/issues/31354 for details. - name: Replace between the expressions (requires Ansible >= 2.4) ansible.builtin.replace: path: /etc/hosts after: '<VirtualHost [*]>' before: '</VirtualHost>' regexp: '^(.+)$' replace: '# \1' - name: Supports common file attributes ansible.builtin.replace: path: /home/jdoe/.ssh/known_hosts regexp: '^old\.host\.name[^\n]*\n' owner: jdoe group: jdoe mode: '0644' - name: Supports a validate command ansible.builtin.replace: path: /etc/apache/ports regexp: '^(NameVirtualHost|Listen)\s+80\s*$' replace: '\1 127.0.0.1:8080' validate: '/usr/sbin/apache2ctl -f %s -t' - name: Short form task (in ansible 2+) necessitates backslash-escaped sequences ansible.builtin.replace: path=/etc/hosts regexp='\\b(localhost)(\\d*)\\b' replace='\\1\\2.localdomain\\2 \\1\\2' - name: Long form task does not ansible.builtin.replace: path: /etc/hosts regexp: '\b(localhost)(\d*)\b' replace: '\1\2.localdomain\2 \1\2' - name: Explicitly specifying positional matched groups in replacement ansible.builtin.replace: path: /etc/ssh/sshd_config regexp: '^(ListenAddress[ ]+)[^\n]+$' replace: '\g<1>0.0.0.0' - name: Explicitly specifying named matched groups ansible.builtin.replace: path: /etc/ssh/sshd_config regexp: '^(?P<dctv>ListenAddress[ ]+)(?P<host>[^\n]+)$' replace: '#\g<dctv>\g<host>\n\g<dctv>0.0.0.0'