Howto start mprime automically for (Debian) Linux

[irowiki]

Originally Posted by chalsall

Or, to avoid any dependencies, I use this:

@reboot ~/prime/mprime -d </dev/null >>~/prime/mprime.log 2>/dev/null &

Then, if I want, I can log into the machine and "tail -f ~/prime/mprime.log".

Do you setup a logrotate with this?

[chalsall]

Originally Posted by irowiki

Do you setup a logrotate with this?

Nah... I like to have the file around for analysis in the case of a mis-match or other issues (I only do P-1'ing or DC'ing). And on one of my fastest machines (with frequent logging) it only generates about 10 MB a month; nothing now-a-days....

[irowiki]

Originally Posted by chalsall

Nah... I like to have the file around for analysis in the case of a mis-match or other issues (I only do P-1'ing or DC'ing). And on one of my fastest machines (with frequent logging) it only generates about 10 MB a month; nothing now-a-days....

Well thanks a bunch either way, linux has been a hobby of mine for many years, and there's many things I have no idea of what to do.

Up until now I'd log into one of my linux boxes, kill mprime, and restart it in the SSH session so I could see how it was doing!

Originally Posted by ET_

Five years have passed since the last message on topic.

Now, having Ubuntu, and wanting to run mprime in background (./mprime &) and unmanned at each restart of the computer, especially after a power blackout (quite frequent in this season in Italy), what script would you suggest?

I have seen flavours of init.d, crontab and rc.local, with pros and cons, and would appreciate your actual hint.

Thank you

With "systemd" systems like Debian and Ubuntu you should write something like that in a file named /etc/systemd/system/mprime.service :

[Unit]
Description=Mprime Service
After=network.target


[Service]
Type=simple
Restart=always
ExecStart=/path/to/mprime/mprime -d

[Install]
WantedBy=multi-user.target

and then issue some commands:

systemctl daemon-reload

and

systemctl enable mprime.service
systemctl start mprime.service

[tdulcet]

This install script automatically sets up crontab to run MPrime after a specified idle time: https://www.mersenneforum.org/showthread.php?t=23486

It uses this very long command:

crontab -l | { cat; echo "* * * * * if who -s | awk '{ print \$2 }' | (cd /dev && xargs -r stat -c '\%U \%X') | awk '{if ('\"\$(date +\%s)\"'-\$2<$TIME) { print \$1\"\t\"'\"\$(date +\%s)\"'-\$2; ++count }} END{if (count>0) { exit 1 }}' > /dev/null; then pgrep mprime > /dev/null || (cd $DIR && nohup ./mprime &); else pgrep mprime > /dev/null && killall mprime; fi"; } | crontab -

See here for context: https://github.com/tdulcet/Distribut.../mprime.sh#L66