[systemd-devel] empty a directory in service file as ExecStartPre

[arnaud gaboury]

On Sat, Jan 2, 2016 at 1:08 PM, Mantas Mikulėnas <grawity at gmail.com> wrote:
> ExecStart does not go through a shell, so it won't expand wildcards.

OK. I understand now.
>
> Try running 'find /dir -mindepth 1 -delete', that also cleans up dotdirs.

In my case, there is one more hurdle. Will post elsewhere as it is OT
in this list.
Thank you for your help.
>
> Alternatively 'sh -c "rm .../*" to handle wildcards.
>
>
> On Sat, Jan 2, 2016, 13:39 arnaud gaboury <arnaud.gaboury at gmail.com> wrote:
>>
>> I can't manage to empty a directory as a Exec in a service file. Here is
>> part:
>>
>> ---------------------------------------------------------------
>> [Service]
>> User=postgres
>> Environment=REPORTDIR=/storage/psqlReport
>> ExecStartPre=/usr/bin/rm -f ${REPORTDIR}/*
>> ExecStart=MyCommand
>>
>> --------------------------------------------------
>>
>> $ journalctl -xe -l
>> -------------------------------
>> -- Unit pgcluu_collectd.service has begun starting up.
>> Jan 02 12:34:02 poppy pgcluu_collectd[21593]: *** pgcluu_collectd v2.4
>> (pid:21593) started at Sat Jan  2 12:34:02 2016
>> Jan 02 12:34:02 poppy pgcluu_collectd[21593]: Type Ctrl+c to quit.
>> Jan 02 12:34:02 poppy pgcluu[21594]: FATAL: output directory
>> /storage/psqlReport is not empty. at /usr/bin/pgcluu line 1033.
>> Jan 02 12:34:02 poppy systemd[1]: pgcluu_collectd.service: Control
>> process exited, code=exited status=2
>> -------------------------------------------------
>>
>> Running manually the rm command as user postgres empty the directory,
>> but when in service file, the directory is still full. I see it as
>> ExecStart=MyCommand complains the directory is full and service exits
>> with an error.
>> User postgres has of course rw access to directory content.
>> No any kind of interactive prompt when running rm.
>> If I start the service with an empty /storage/psqlReport, service success.
>>
>> What am I missing? Is there a better way to empty the directory before
>> running my command ? The service will be timered, so can't empty
>> manually.
>>
>> Thank you for help.
>>
>> --
>>
>> google.com/+arnaudgabourygabx
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