# Checking for a string and value **URL:** \ **Category:** Ansible Project\ **Created:** [March 10, 2018, 5:38am UTC](https://forum.ansible.com/t/checking-for-a-string-and-value/26953 "2018-03-10T05:38:13Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Vino\_B](https://avatars.discourse-cdn.com/v4/letter/v/839c29/32.png) [@Vino\_B](https://forum.ansible.com/u/Vino_B)\ **Post date:** [March 10, 2018, 5:38am UTC](https://forum.ansible.com/t/checking-for-a-string-and-value/26953/1 "2018-03-10T05:38:13Z")
Hi All, Request your help, I need to find whether the string numa\_balancing is set to disabled in the file /etc/default/grub where the string in contained in the string GRUB\_CMDLINE\_LINUX\_DEFAULT any help on this is much appreciated. cat /etc/default/grub|grep GRUB\_CMDLINE\_LINUX\_DEFAULT GRUB\_CMDLINE\_LINUX\_DEFAULT=“root=/dev/hda1 disk=/dev/hda resume=swap console=ttyS0,115200n8 multipath=off net.ifnames=0 NON\_PERSISTENT\_DEVICE\_NAMES=1 quiet elevator=noop intel\_idle.max\_cstate=1 processor.max\_cstate=1 numa\_balancing=disable” From, Vino.B ---
**Author:** ![Kai\_Stian\_Olstad](https://avatars.discourse-cdn.com/v4/letter/k/e19adc/32.png) [@Kai\_Stian\_Olstad](https://forum.ansible.com/u/Kai_Stian_Olstad)\ **Post date:** [March 10, 2018, 7:06pm UTC](https://forum.ansible.com/t/checking-for-a-string-and-value/26953/2 "2018-03-10T19:06:53Z")
There are many ways to do that, here is one   - slurp:       src: /etc/default/grub     register: r   - debug: msg="Found it"     when: r.content | b64decode | regex\_search('^GRUB\_CMDLINE\_LINUX\_DEFAULT=.\*numa\_balancing=disable') ---
**Author:** ![Vino\_B](https://avatars.discourse-cdn.com/v4/letter/v/839c29/32.png) [@Vino\_B](https://forum.ansible.com/u/Vino_B)\ **Post date:** [March 11, 2018, 6:45am UTC](https://forum.ansible.com/t/checking-for-a-string-and-value/26953/3 "2018-03-11T06:45:48Z")
Hi Kai, Thank you very much, but the above solution always states tune eve when the search criteria is changed eg. in the above code if you change the =disable" to =“disbaleX” it should fail, but the output states as successful when: r.content | b64decode | regex\_search(‘^GRUB\_CMDLINE\_LINUX\_DEFAULT=.\*numa\_balancing=disableX’) From, Vino.B ---
**Author:** ![Kai\_Stian\_Olstad](https://avatars.discourse-cdn.com/v4/letter/k/e19adc/32.png) [@Kai\_Stian\_Olstad](https://forum.ansible.com/u/Kai_Stian_Olstad)\ **Post date:** [March 11, 2018, 9:20am UTC](https://forum.ansible.com/t/checking-for-a-string-and-value/26953/4 "2018-03-11T09:20:45Z")
I made a little test and can't confirm this $ cat grub GRUB\_CMDLINE\_LINUX\_DEFAULT="root=/dev/hda1 disk=/dev/hda resume=swap console=ttyS0,115200n8 multipath=off net.ifnames=0 NON\_PERSISTENT\_DEVICE\_NAMES=1 quiet elevator=noop intel\_idle.max\_cstate=1 processor.max\_cstate=1 numa\_balancing=disable" cat test.yml ---
**Author:** ![Vino\_B](https://avatars.discourse-cdn.com/v4/letter/v/839c29/32.png) [@Vino\_B](https://forum.ansible.com/u/Vino_B)\ **Post date:** [March 11, 2018, 12:17pm UTC](https://forum.ansible.com/t/checking-for-a-string-and-value/26953/5 "2018-03-11T12:17:02Z")
Hi Kai, Below is the playbook does not execute the debug part , can you help me what is wrong in the below play book. ---
**Author:** ![Kai\_Stian\_Olstad](https://avatars.discourse-cdn.com/v4/letter/k/e19adc/32.png) [@Kai\_Stian\_Olstad](https://forum.ansible.com/u/Kai_Stian_Olstad)\ **Post date:** [March 11, 2018, 12:47pm UTC](https://forum.ansible.com/t/checking-for-a-string-and-value/26953/6 "2018-03-11T12:47:58Z")
>   Below is the playbook does not execute the debug part , can you help me > what is wrong in the below play book. > > --- > - hosts: target >   remote\_user: ansible >   become: true >   become\_method: sudo >   tasks: >    - slurp: >       src: /etc/default/grub >      register: r >    - name: Check whether AutoNuma is disabled >      debug: msg="Found it" >      when: > r.content|b64decode|regex\_search('^GRUB\_CMDLINE\_LINUX\_DEFAULT=.\*numa\_balancing=disableX') > > OUTPUT: \ > TASK [Check whether AutoNuma is disabled] > \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* > skipping: [10.162.54.34] The file does not have disableX in it so it will not run the task. If you are looking for the opposite behaviour you need to add "not" when: not (r.content|b64decode|regex\_search('^GRUB\_CMDLINE\_LINUX\_DEFAULT=.\*numa\_balancing=disableX')) ---
**Author:** ![Vino\_B](https://avatars.discourse-cdn.com/v4/letter/v/839c29/32.png) [@Vino\_B](https://forum.ansible.com/u/Vino_B)\ **Post date:** [March 12, 2018, 6:31am UTC](https://forum.ansible.com/t/checking-for-a-string-and-value/26953/7 "2018-03-12T06:31:11Z")
Hi Kai, Thank you very much