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Ansible: Add a String to an existing line in a file
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# Adapted from solution provided by http://stackoverflow.com/users/57719/chin-huang http://stackoverflow.com/a/31465939/348868 | |
# Scenario: You want to add a group to the list of the AllowGroups in ssh_config | |
# before: | |
# AllowGroups Group1 | |
# After: | |
# AllowGroups Group1 Group2 | |
- name: Add Group to AllowGroups | |
replace: | |
backup: yes | |
dest: /etc/ssh/sshd_config | |
regexp: '^(AllowGroups(?!.*\b{{ sftp_group_name }}\b).*)$' | |
replace: '\1 {{ sftp_group_name }}' | |
# This could also be achieved using the line in file module: | |
- name: Add Group to AllowGroups | |
lineinfile: | |
dest=/etc/ssh/sshd_config | |
backup=True | |
backrefs=True | |
state=present | |
regexp='^(AllowGroups(?!.*\b{{ sftp_group_name }}\b).*)$' | |
line='\1 {{ sftp_group_name }}' |
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see also regex debugger here for adding "dns" to list of plugins: https://regex101.com/r/KxRZNs/5