Sent from ProtonMail, encrypted email based in Switzerland. ------- Original Message ------- On Tuesday, April 5th, 2022 at 6:43 PM, Ranjan Maitra <mlmaitra@xxxxxxx> wrote: > On Tue Apr05'22 10:02:35PM, Barry wrote: > > > From: Barry barry@xxxxxxxxxxxxxxxx > > Date: Tue, 5 Apr 2022 22:02:35 +0100 > > To: olivares33561 olivares33561@xxxxxxxxxxxxxx, Community support for > > Fedora users users@xxxxxxxxxxxxxxxxxxxxxxx > > Reply-To: Community support for Fedora users users@xxxxxxxxxxxxxxxxxxxxxxx > > Subject: Re: convert crontab jobs to systemd timers > > > > > On 5 Apr 2022, at 21:19, olivares33561 via users users@xxxxxxxxxxxxxxxxxxxxxxx wrote: > > > > > > Dear kind Fedora users, > > > > > > I have a crontab file that I use to play some files about 3 minutes before bell rings between classes. I had to install anacron with dnf command. I have seen emails where some folks recommend systemd timers. How can I convert a crontab > > > # > > > [olivares@fedora Downloads]$ crontab -l > > > # min hour day-of-month month day-of-week command > > > # 0-59 0-23 1-31 1-12 0-6 0=sun 1=mon > > > #50 04 * * 1-5 ~/.xalarm >/dev/null 2>&1 > > > #50 04 * * 0,6 ~/.salarm >/dev/null 2>&1 > > > #59 09 * * 0,6 ~/.salarm >/dev/null 2>&1 > > > #00 07 * * 1-5 ~/.xalarm >/dev/null 2>&1 > > > 42 08 * * 1-5 ~/.dalarm >/dev/null 2>&1 > > > 52 09 * * 1-5 ~/.dalarm >/dev/null 2>&1 > > > 40 10 * * 1-5 ~/.dalarm >/dev/null 2>&1 > > > 28 11 * * 1-5 ~/.dalarm >/dev/null 2>&1 > > > 16 12 * * 1-5 ~/.dalarm >/dev/null 2>&1 > > > 57 12 * * 1-5 ~/.dalarm >/dev/null 2>&1 > > > 40 14 * * 1-5 ~/.dalarm >/dev/null 2>&1 > > > 28 15 * * 1-5 ~/.dalarm >/dev/null 2>&1 > > > 17 16 * * 1-5 ~/.dalarm >/dev/null 2>&1 > > > #30 16 * * 1-5 ~/.lalarm > /dev/null 2>&1 > > > 25 16 * * 1-5 /usr/sbin/poweroff >/dev/null 2>&1 > > > > > > # > > > to systemd timers? An easy idiot proof way. The .dalarm script calls mplayer and plays from a playlist. > > > > > > # > > > [olivares@fedora Downloads]$ sudo systemctl list-timers > > > [sudo] password for olivares: > > > NEXT LEFT LAST PASSED UN> > > > Tue 2022-04-05 15:13:39 CDT 1min 46s left n/a n/a sy> > > > Tue 2022-04-05 15:38:11 CDT 26min left n/a n/a dn> > > > Wed 2022-04-06 00:00:00 CDT 8h left Tue 2022-04-05 05:34:07 CDT 9h ago lo> > > > Wed 2022-04-06 00:00:00 CDT 8h left Tue 2022-04-05 05:34:07 CDT 9h ago un> > > > Wed 2022-04-06 00:34:55 CDT 9h left Tue 2022-04-05 05:34:07 CDT 9h ago pl> > > > Sun 2022-04-10 01:00:00 CDT 4 days left Tue 2022-04-05 05:34:07 CDT 9h ago ra> > > > Mon 2022-04-11 00:20:16 CDT 5 days left Tue 2022-04-05 05:34:07 CDT 9h ago fs> > > > > > > 7 timers listed. > > > Pass --all to see loaded but inactive timers, too. > > > # > > > > > > I have read https://opensource.com/article/20/7/systemd-timers > > > and > > > https://www.maketecheasier.com/use-systemd-timers-as-cron-replacement/ > > > > > > but have not tried it out. Any help on this is appreciated. I want to test it out. Thank you in advance > > > > Why not try it out? What is stopping you? > > > > The only thing I would add to you reading list if the man page for systemd.timer > > > > I would start with a timer service that uses /bin/echo that you can use to see that the timer service runs when you expect. > > > > Barry > > > So sorry to suddenly wake up on this thread, but is cron going away. I use it all the time, hourly for backups and nightly for updates. > > Many thanks, > Ranjan I do not know the answer to that question, but I wanted to find out if there are scripts that can help convert a crontab file to a systemd-timer run based. Many people are recommending it. I am used to using crontab, but running Fedora 36(Beta* I know not part of this list, but I had to install anacron to get it working),. In previous versions of Fedora I did not have to do this. So it may*, maynot* survive the future. In case someone can help, I setup my crontab with the following: [olivares@fedora ~]$ cat ~/.dalarmsetup2.sh #!/bin/sh # # This script sets up to find music and sets up a player and plays music at a certain time # # create file to find music and setup crontab accordingly FIND=$(echo `which find`) SORT=$(echo `which sort`) XTERM=$(echo `which xterm`) MPLAYER=$(echo `which mplayer`) SLEEP=$(echo `which sleep`) KILL=$(echo `which kill`) XSET=$(echo `which xset`) echo "#!/bin/sh " >> ~/.fndmus echo "# " >> ~/.fndmus echo "# find the music & create playlist" >> ~/.fndmus echo "# " >> ~/.fndmus echo "# find the music check ~/ /media/disk where music is stored :)" >> ~/.fndmus echo "$FIND ~/ -iname ""*.mp3"" -o -iname ""*.og*"" -o -iname ""*.m4a""-o -iname ""*.wma"" -o -iname "*.ra"> ~/.playlist-all " >> ~/.fndmus echo "# sort the playlist " >> ~/.fndmus echo "$SORT ~/.playlist-all> ~/.playlist " >> ~/.fndmus chmod +x ~/.fndmus # setup crontab to play music #set -ue tmp=/tmp/crontab$$ crontab -l >"$tmp" echo "# min hour day-of-month month day-of-week command" >> "$tmp" echo "# 0-59 0-23 1-31 1-12 0-6 0=sun 1=mon " >> "$tmp" echo "#50 04 * * 1-5 ~/.xalarm >/dev/null 2>&1" >>"$tmp" echo "#50 04 * * 0,6 ~/.salarm >/dev/null 2>&1" >>"$tmp" echo "#59 09 * * 0,6 ~/.salarm >/dev/null 2>&1" >>"$tmp" echo "#00 07 * * 1-5 ~/.xalarm >/dev/null 2>&1" >>"$tmp" echo "42 08 * * 1-5 ~/.dalarm >/dev/null 2>&1" >>"$tmp" echo "52 09 * * 1-5 ~/.dalarm >/dev/null 2>&1" >>"$tmp" echo "40 10 * * 1-5 ~/.dalarm >/dev/null 2>&1" >>"$tmp" echo "28 11 * * 1-5 ~/.dalarm >/dev/null 2>&1" >>"$tmp" echo "16 12 * * 1-5 ~/.dalarm >/dev/null 2>&1" >>"$tmp" echo "57 12 * * 1-5 ~/.dalarm >/dev/null 2>&1" >>"$tmp" echo "40 14 * * 1-5 ~/.dalarm >/dev/null 2>&1" >>"$tmp" echo "28 15 * * 1-5 ~/.dalarm >/dev/null 2>&1" >>"$tmp" echo "17 16 * * 1-5 ~/.dalarm >/dev/null 2>&1 " >>"$tmp" echo "#30 16 * * 1-5 ~/.lalarm > /dev/null 2>&1" >> "$tmp" echo "25 16 * * 1-5 sudo systemctl poweroff >/dev/null 2>&1" >>"$tmp" crontab "$tmp" rm "$tmp" # setup Mplayer to play with xterm echo "#!/bin/sh " >> ~/.xalarm echo "# " >> ~/.xalarm echo "# save as ~/.xalarm " >> ~/.xalarm echo " " >> ~/.xalarm echo "export DISPLAY=:0" >> ~/.xalarm echo "$XSET dpms force on;" >> ~/.xalarm echo "$XSET -dpms;" >> ~/.xalarm echo " " >> ~/.xalarm echo "$XTERM -display :0 -bg black -fg white \\" >> ~/.xalarm echo "-e $MPLAYER -really-quiet -shuffle -playlist ~/.playlist & PID=\$!" >> ~/.xalarm echo "$SLEEP 1680" >> ~/.xalarm echo "$KILL \$PID" >> ~/.xalarm echo " " >> ~/.xalarm echo "$XSET +dpms;" >> ~/.xalarm echo "$XSET dpms force off;" >> ~/.xalarm chmod +x ~/.xalarm # run the script mean to find music and create playlist ~/.fndmus cp ~/.xalarm ~/.lalarm cp ~/.xalarm ~/.salarm cp ~/.xalarm ~/.dalarm sed -i 's|1680|14400|g' ~/.lalarm sed -i 's|1680|600|g' ~/.salarm sed -i 's|1680|360|g' ~/.dalarm It calls on several programs and it sets it up and works automagically :) I just want to have something in case this functionality goes away and try it out and hope it works the same. I had to add code to enable the monitor(since I am using hdmi), the screen needs to wake up and had to install xset. If anyone can share code/script to convert the above crontab to a systemd-timer unit It would be awesome. Links [1] : https://fedoraproject.org/wiki/Features/SystemdCalendarTimers [2] : https://wiki.archlinux.org/title/Systemd/Timers Thanks & Best Regards, Antonio _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
