crontab -l : lists current crontab
crontab -e : edits the currently scheduled jobs
You can temporarily disable a job from running just by commenting out the schedule line for the job.
Booting Raspbian Jessie to a shell prompt
Raspbian Wheezy on the Raspberry Pi used to boot to a shell by default, but on Jessie, the default is to boot in graphical mode to the desktop. You can easily change this with raspi-config, either from the desktop menu using the gui app or raspi-config from the command line. Step by step instructions in this post.
Amateur radio logging apps on Raspbian / Raspberry Pi
There might be others too, but here’s a couple of Amateur Radio logging apps that install easily on Raspbian:
- https://www.cqrlog.com/ : install with: sudo apt-get install cqrlog
- http://www.nongnu.org/xlog/ : install with: sudo apt-get install xlog
Raspbian fsck fails on boot
I used
sudo touch /forcefsckto set my Pi to run a fsck at boot, but it failed with this message:
"An automatic check (fsck) of the root filesystem failed. A manual fsck must be performed, then the system restarted. The fsck should be performed in maintenance mode with the root filesystem mounted in read-only mode"
I ran sudo fsck /dev/mmcblk0p2 – there was a couple of errors that required a ‘y’ to fix, and then it completed. Rebooted, and back to normal. Similar discussion on this message here.