So you have a shell script which needs to drop or modify its privileges by switching to an appropriate system user before continuing its execution. Here are some alternatives to accomplish this while preserving all original command line arguments properly. Privileges are dropped by switching to the nobody user, adapt the RUN_AS variable as desired. […]
Category Archives: Linux
VirtualBox + Secure Boot + Ubuntu = fail
Here are the steps I did to enable VirtualBox to work properly in Ubuntu with UEFI Secure Boot fully enabled*. The problem is the requirement that all kernel modules must be signed by a key trusted by the UEFI system, otherwise loading will fail. Ubuntu does not sign the third party vbox* kernel modules, but […]
Gracefully killing a Java process managed by systemd
The basic way for systemd to stop a running service is by sending the SIGTERM signal (a regular kill) to the process control group of the service, and after a configurable timeout, a SIGKILL to make things really go away if not responding. Of course, all the details are configurable, and often times you’d have […]