Re: IOC Shell Persist history: ERROR Permission denied (13) writing '.iocsh_history'

[Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov>]

On 11/1/24 06:09, Webb, Brad via Tech-talk wrote:
> After upgrading to EPICS 7.0.8.1 I see the errors below in the IOC start-up console output.
> ERROR Permission denied (13) writing '.iocsh_history'
> ERROR Permission denied (13) writing '.iocsh_history'
>
>  From the release notes:
> https://urldefense.us/v3/__https://github.com/epics-base/epics-base/blob/7.0/documentation/RELEASE_NOTES.md*persist-history__;Iw!!G_uCfscf7eWS!fxC6WWyvShbxHs8jPNfGxcc-Yd3gb7wGySPtGjoGKon5HqQERrpNd3FD4NrQvKubT7JRig5xbohNUi8W3jbS$
>
> I find this section about setting the environment variable:
> Persist history
> Attempt to read and write command to a file (./.iocsh_history by default). Name may be overwritten
> with by setting $EPICS_IOCSH_HISTFILE to an alternate path, or disabled by setting to an empty
> string.
>
> So, my question is how can this variable be set on a per IOC basis so that each IOC can have its own
> unique path for the history file?
Whatever mechanism you are using to launch IOC processes would
need to compute and set $EPICS_IOCSH_HISTFILE .

Since you did RtM, I appreciate that this is not by itself a
useful reply :)

Can you say more about how your IOCs are being launched?
Do multiple IOC processes share the same $PWD and/or does
an IOC not have permission to create files in $PWD ?