Ansible Module command: Difference between revisions
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=Overview= | =Overview= | ||
The command module takes the command name followed by a list of space-delimited arguments. | The command module takes the command name followed by a list of space-delimited arguments. A command will NOT be interpreted by a shell, so variables like $HOME and operations like "<", ">", "|", ";" and "&" will not work. Use the [[Ansible Module shell|shelll]] module for that. | ||
For a discussion on the interaction between <code>command</code>, <code>cmd</code>, <code>args</code>, etc. see [[#command.2C_args_and_cmd|<tt>command</tt>, <tt>args<tt> and <tt>cmd</tt>]] below. | |||
<syntaxhighlight lang='yaml'> | <syntaxhighlight lang='yaml'> |
Revision as of 05:54, 4 July 2021
External
Internal
Overview
The command module takes the command name followed by a list of space-delimited arguments. A command will NOT be interpreted by a shell, so variables like $HOME and operations like "<", ">", "|", ";" and "&" will not work. Use the shelll module for that.
For a discussion on the interaction between command
, cmd
, args
, etc. see command, args and cmd below.
- name: A command example
command: some-command arg1 arg2
argv: ... # Passes the command as a list rather than a string
cmd: ... # The command to run
chdir: ... # Change into this directory before running the command
stdin: ...
stdin_add_newline: ...
warn: ...
creates: ...
become: true
become_user: root
args:
chdir: /somedir/
command, args and cmd
Privilege Escalation
See:
Registering Variables as Results of Command Execution
This sets a variable:
- name: Read requested Java version
command: "sh -c \"grep ^JAVA_VERSION {{ansible_env.HOME}}/config.txt | sed -e 's/.*=//'\""
register: java_version
changed_when: false
Setting Command Output as a Fact
Set the command output as a fact (see set_fact
):
- name: Get Homebrew installation directory
command: "sh -c \"brew --prefix\""
register: brew_prefix_cmd
changed_when: false
- name: Set Homebrew installation directory
set_fact:
pkg_manager_install_dir: "{{ brew_prefix_cmd.stdout }}"