[CentOS] Running script before reboot or shutdown

Tue Dec 22 12:56:36 UTC 2020
J Martin Rushton <martinrushton56 at btinternet.com>

This could be the same issue that people run into when designing cron 
jobs.  You may only have a limited set of directories on you $PATH and 
other environment variables may be missing.  If this is the case, ensure 
that you define the full path to utilies:


rather than

	myprog -h

HTH, and BTW you can still use init scripts if it is easier.

On 22/12/2020 11:51, Carlos Lopez wrote:
> Hi all,
> I am trying to configure a script as a systemd service to run first when a shutdown or reboot is called. This script execute some scp commands to copy some files to other machines. My actual defined systemd’s file is:
> [Unit]
> Description=Remote copy some files before reboot/shutdown
> Before=poweroff.target halt.target shutdown.target reboot.target
> DefaultDependencies=no
> [Service]
> Type=simple
> ExecStart=/bin/true
> ExecStop=/usr/local/bin/remote_copy
> RemainAfterExit=yes
> [Install]
> WantedBy=multi-user.target
> But it doesn’t work. “remote_copy” is working when it is executed from root shell. I am using CentOS-8 fully patched release.
> Any idea what am I doing wrong?
> Regards,
> C. L. Martinez
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J Martin Rushton MBCS