Nevím, o co jde. Pár nápadů:
* Můžeš zkusit projít všechny cron conf soubory: sudo grep -IR shm /etc/crontab /var/spool/cron/crontabs /etc/cron.d /etc/cron.{daily,weekly,monthly}
* Je neobvyklé mít skript v /dev/shm, protože se jedná o tmpfs (viz výpis mount)
* Opravdu několikrát za minutu? Cron se "probouzí" vždy jen v celou minutu
arrange@lucid-lean:~$ man cron | grep minute
cron then wakes up every minute, examining all stored crontabs, checking each command to see if it should be run in the current minute. When exe‐
Additionally, cron checks each minute to see if its spool directory's modtime (or the modtime on /etc/crontab) has changed, and if it has, cron
Only jobs that run at a particular time (not specified as @hourly, nor with '*' in the hour or minute specifier) are affected. Jobs which are