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# There is actually no actual shell module source, when you use 'shell' in ansible,
# it runs the 'command' module with special arguments and it behaves differently.
# See the command source and the comment "#USE_SHELL".
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
DOCUMENTATION = '''
---
module: shell
short_description: Execute commands in nodes.
description:
- The M(shell) module takes the command name followed by a list of space-delimited arguments.
It is almost exactly like the M(command) module but runs
the command through a shell (C(/bin/sh)) on the remote node.
version_added: "0.2"
options:
free_form:
description:
- The shell module takes a free form command to run, as a string. There's not an actual
option named "free form". See the examples!
required: true
default: null
creates:
description:
- a filename, when it already exists, this step will B(not) be run.
required: no
default: null
removes:
description:
- a filename, when it does not exist, this step will B(not) be run.
version_added: "0.8"
required: no
default: null
chdir:
description:
- cd into this directory before running the command
required: false
default: null
version_added: "0.6"
executable:
description:
- change the shell used to execute the command. Should be an absolute path to the executable.
required: false
default: null
version_added: "0.9"
warn:
description:
- if command warnings are on in ansible.cfg, do not warn about this particular line if set to no/false.
required: false
default: True
version_added: "1.8"
notes:
- If you want to execute a command securely and predictably, it may be
better to use the M(command) module instead. Best practices when writing
playbooks will follow the trend of using M(command) unless M(shell) is
explicitly required. When running ad-hoc commands, use your best
judgement.
- To sanitize any variables passed to the shell module, you should use
"{{ var | quote }}" instead of just "{{ var }}" to make sure they don't include evil things like semicolons.
requirements: [ ]
author:
- Ansible Core Team
- Michael DeHaan
'''
EXAMPLES = '''
# Execute the command in remote shell; stdout goes to the specified
# file on the remote.
- shell: somescript.sh >> somelog.txt
# Change the working directory to somedir/ before executing the command.
- shell: somescript.sh >> somelog.txt
args:
chdir: somedir/
# You can also use the 'args' form to provide the options. This command
# will change the working directory to somedir/ and will only run when
# somedir/somelog.txt doesn't exist.
- shell: somescript.sh >> somelog.txt
args:
chdir: somedir/
creates: somelog.txt
# Run a command that uses non-posix shell-isms (in this example /bin/sh
# doesn't handle redirection and wildcards together but bash does)
- shell: cat < /tmp/*txt
args:
executable: /bin/bash
'''
RETURN = '''
msg:
description: changed
returned: always
type: boolean
sample: True
start:
description: The command execution start time
returned: always
type: string
sample: '2016-02-25 09:18:26.429568'
end:
description: The command execution end time
returned: always
type: string
sample: '2016-02-25 09:18:26.755339'
delta:
description: The command execution delta time
returned: always
type: string
sample: '0:00:00.325771'
stdout:
description: The command standard output
returned: always
type: string
sample: 'Clustering node rabbit@slave1 with rabbit@master ...'
stderr:
description: The command standard error
returned: always
type: string
sample: 'ls: cannot access foo: No such file or directory'
cmd:
description: The command executed by the task
returned: always
type: string
sample: 'rabbitmqctl join_cluster rabbit@master'
rc:
description: The command return code (0 means success)
returned: always
type: int
sample: 0
stdout_lines:
description: The command standard output split in lines
returned: always
type: list of strings
sample: [u'Clustering node rabbit@slave1 with rabbit@master ...']
'''
|
