[root@node1 ansible]# pwd

/etc/ansible

[root@node1 ansible]# cat hosts

[testservers]

192.168.100.131

192.168.100.132

[root@node1 ansible]#

SYNOPSIS

       ansible <host-pattern> [-f forks] [-m module_name] [-a args]

ansible-doc moduleName

[root@node1 ansible]# ansible-doc command

less 436

Copyright (C) 1984-2009 Mark Nudelman

less comes with NO WARRANTY, to the extent permitted by law.

For information about the terms of redistribution,

see the file named README in the less distribution.

Homepage: http://www.greenwoodsoftware.com/less

> COMMAND

  The [command] module takes the command name followed by a list of

  space-delimited arguments. The given command will be executed on all

  selected nodes. It will not be processed through the shell, so

  variables like `$HOME' and operations like `"<"', `">"', `"|"', and

  `"&"' will not work (use the [shell] module if you need these

  features).

Options (= is mandatory):

- chdir

        cd into this directory before running the command [Default:

        None]

- creates

        a filename, when it already exists, this step will *not* be

        run. [Default: None]

- executable

        change the shell used to execute the command. Should be an

        absolute path to the executable. [Default: None]

= free_form

        the command module takes a free form command to run.  There is

        no parameter actually named 'free form'. See the examples!

        [Default: None]

- removes

        a filename, when it does not exist, this step will *not* be

        run. [Default: None]

- warn

        if command warnings are on in ansible.cfg, do not warn about

        this particular line if set to no/false. [Default: True]

Notes:  If you want to run a command through the shell (say you are using

        `<', `>', `|', etc), you actually want the [shell] module

        instead. The [command] module is much more secure as it's not

        affected by the user's environment.  `creates', `removes', and

        `chdir' can be specified after the command. For instance, if

        you only want to run a command if a certain file does not

        exist, use this.

EXAMPLES:

# Example from Ansible Playbooks.

- command: /sbin/shutdown -t now

# Run the command if the specified file does not exist.

- command: /usr/bin/make_database.sh arg1 arg2 creates=/path/to/database

# 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

# /path/to/database doesn't exist.

- command: /usr/bin/make_database.sh arg1 arg2

  args:

    chdir: somedir/

    creates: /path/to/database

[root@node1 ansible]# ansible testservers -m command -a 'tail -2 /etc/passwd'

192.168.100.131 | success | rc=0 >>

postfix:x:89:89::/var/spool/postfix:/sbin/nologin

sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin

192.168.100.132 | success | rc=0 >>

sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin

tcpdump:x:72:72::/:/sbin/nologin

[root@node1 ansible]# ansible testservers -m command -a 'pwd'

192.168.100.132 | success | rc=0 >>

/root

192.168.100.131 | success | rc=0 >>

/root

[root@node1 ansible]# ansible testservers -m command -a 'chdir=/tmp/ pwd'

192.168.100.131 | success | rc=0 >>

/tmp

192.168.100.132 | success | rc=0 >>

/tmp

[root@node1 ansible]# ansible testservers -m command -a 'uname -n'

[root@node1 ansible]# ansible testservers -m script -a '/etc/ansible/test.sh

[root@node1 ansible]# ansible testservers -m shell -a 'bash /root/test.sh'

[root@node1 ansible]# ansible testservers -m raw -a "ifconfig eth0 |sed -n 2p |awk '{print \$2}' |awk -F: '{print \$2}'"