On Tue, Feb 27 2024 at 10:15:59 AM, Gary Dale <g...@extremeground.com> wrote: > I'm running Debian/Trixie on an AMD64 system. I have an old wifi > adapter that Linux has problems with that works once I run: > > /usr/sbin/modprobe brcmfmac > echo 13b1 0bdc > /sys/bus/usb/drivers/brcmfmac/new_id > > However when I add those lines to the root's crontab using # crontab -e as > > @reboot /usr/sbin/modprobe brcmfmac > @reboot echo 13b1 0bdc > /sys/bus/usb/drivers/brcmfmac/new_id > > the second line fails. I get an e-mail stating "/bin/sh: 1: cannot > create /sys/bus/usb/drivers/brcmfmac/new_id: Directory nonexistent" > > I'm not sure if the modprobe is working or if the module is being > loaded without it. It's likely that debian detects the need for the > module and loads it. >
Is it possible that the command is being run before the module is loaded. Consider putting both into a single command, perhaps by writing a script that does both things. > Anyway, that got me down the rabbit hole to try to find where the > crontab file is. > > ls -l /root/cron* > ls: cannot access '/root/cron*': No such file or directory > > also > > # whereis crontab > crontab: /usr/bin/crontab /etc/crontab > /usr/share/man/man1/crontab.1.gz /usr/share/man/man5/crontab.5.gz > > so it's not in the location that you'd expect. Nor can I find it in > /etc/. The various cron files there don't contain the lines I;m > looking for. > Editing/creating crontab files using "crontab -e" creates it in /var/spool/cron/crontabs. > <snipped crontab content> > > Can anyone explain how Trixie is handling crontabs now? This behavior has existed forever. I'm on bookworm, though, so no idea if anything is changing in trixie. -- regards, kushal
