Ansible - Remove whitespace using the trim filter

trim is a Jinja2 filter, used to remove whitespace from the left and right sides of a string. In this example, "    hello world   " will be trimmed.

- name: "output '     hello world    ', trim whitespace"
  debug: 
    msg: "{{ '     hello world     ' | trim }}"

 

Which should return the following.

TASK [output '     hello world    ', trim whitespace]
ok: [server1.example.com] => {
    "msg": [
        "hello world"
    ]
}

 

Let's say you are using the vars plugin to create a variable, like this.

vars:
  foo: "     hello world     "

 

The debug module can be used to output the variable, like this.

- name: "output the contents of the 'foo' variable"
  debug: 
    msg: "{{ foo }}"

 

Which should return the following.

TASK [output the contents of the 'foo' variable]
ok: [server1.example.com] => {
    "msg": [
        "     hello world     "
    ]
}

 

The trim filter can be used to to remove whitespace from the left and right sides of a string. Notice that foo is not wrapped in quotes, so that foo is interpreted as a variable, not a string.

- name: "output the contents of the 'foo' variable, trim whitespace"
  debug: 
    msg: "{{ foo | trim }}"

 

Which should return the following.

TASK [output the contents of the 'foo' variable, trim whitespace]
ok: [server1.example.com] => {
    "msg": [
        "hello world"
    ]
}

 



Add a Comment




We will never share your name or email with anyone. Enter your email if you would like to be notified when we respond to your comment.





Please enter 15cc4 in the box below so that we can be sure you are a human.




Comments

Web design by yours truely - me, myself, and I   |   jeremy.canfield@freekb.net   |