# "Can't exec xxdiff" error

**URL:** <https://cms-helpdesk.ncas.ac.uk/t/cant-exec-xxdiff-error/783>\
**Category:** JULES\
**Tags:** JASMIN\
**Created:** [10 November 2022 15:37 UTC](https://cms-helpdesk.ncas.ac.uk/t/cant-exec-xxdiff-error/783 "2022-11-10T15:37:02Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![mgorguner](https://avatars.discourse-cdn.com/v4/letter/m/d78d45/32.png) [@mgorguner](https://cms-helpdesk.ncas.ac.uk/u/mgorguner)\
**Post date:** [10 November 2022 15:37 UTC](https://cms-helpdesk.ncas.ac.uk/t/cant-exec-xxdiff-error/783/1 "2022-11-10T15:37:02Z")

</div>

Hi CMS Helpdesk,

I upgraded my JULES branch to the next model version. During merging, many text conflicts were listed. When I use the ‘fcm conflicts’ command to pop up the 3-way xxdiff display, I get the error below. Am I using this command in the wrong way?

```auto
-bash-4.2$ pwd
/home/users/gorguner/vn6.2_wtrac_branch
-bash-4.2$ fcm conflicts
[info] src/control/shared/fluxes.F90: in text conflict.
[FAIL] fcm_graphic_merge src/control/shared/fluxes.F90 /home/users/gorguner/vn6.2_wtrac_branch/src/control/shared/fluxes.F90.working /home/users/gorguner/vn6.2_wtrac_branch/src/control/shared/fluxes.F90.merge-left.r20512 /home/users/gorguner/vn6.2_wtrac_branch/src/control/shared/fluxes.F90.merge-right.r24202 # rc=2
[FAIL] Can't exec "xxdiff": No such file or directory at /apps/jasmin/metomi/fcm-2019.09.0/bin/fcm_graphic_merge line 66.

```

Regards,  
Merve

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<div class="post-metadata">

**Author:** ![RosalynHatcher](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/rosalynhatcher/32/11_2.png) [@RosalynHatcher](https://cms-helpdesk.ncas.ac.uk/u/RosalynHatcher)\
**Post date:** [10 November 2022 16:01 UTC](https://cms-helpdesk.ncas.ac.uk/t/cant-exec-xxdiff-error/783/2 "2022-11-10T16:01:11Z")

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Hi Merve,

That is indeed the correct usage.

I’ve just tried running that command and get the same error message as you. It looks like `xxdiff` which is used to show the conflicts is not available…

```auto
rshatcher@cylc1$ xxdiff
-bash: xxdiff: command not found
rshatcher@cylc1$ which xxdiff
/usr/bin/which: no xxdiff in (/apps/jasmin/metomi/bin:/usr/lib64/qt-3.3/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/opt/puppetlabs/bin:/home/users/rshatcher/bin)

```

The installations of Rose/Cylc/FCM are maintained by the JASMIN team. Please contact the JASMIN helpdesk.

Regards,  
Ros.

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<div class="post-metadata">

**Author:** ![mgorguner](https://avatars.discourse-cdn.com/v4/letter/m/d78d45/32.png) [@mgorguner](https://cms-helpdesk.ncas.ac.uk/u/mgorguner)\
**Post date:** [10 November 2022 16:06 UTC](https://cms-helpdesk.ncas.ac.uk/t/cant-exec-xxdiff-error/783/3 "2022-11-10T16:06:06Z")

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Ros, thank you very much for checking. I will contact the JASMIN helpdesk.

Regards,  
Merve

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<div class="post-metadata">

**Author:** ![RosalynHatcher](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/rosalynhatcher/32/11_2.png) [@RosalynHatcher](https://cms-helpdesk.ncas.ac.uk/u/RosalynHatcher)\
**Post date:** [14 November 2022 20:43 UTC](https://cms-helpdesk.ncas.ac.uk/t/cant-exec-xxdiff-error/783/4 "2022-11-14T20:43:18Z")

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