Unix / Linux: Manage Multiple SSH Keys

unix linux
Manage multiple ssh private keys and configure ssh to map different private keys to different hosts automatically by using ~/.ssh/config configuration file

Linux: Get WM_CLASS of Window

unix linux
Explains how to retrieve the WM_CLASS property of a window on Linux and also how to manually define the WM_CLASS property in desktop files using StartupWMClass field.

Unix / Linux: How to Create Zombie Process

unix linux
Explains how zombie processes or defunct processes are created on Unix / Linux. Also explains how the zombie process can be removed from the process table. A simple C program is used to demonstrate the creation of zombie processes.

Linux: Run Cron Job on Reboot

unix linux
Explains how to schedule a cron job to run after Linux / BSD system reboot or system startup using @reboot Vixie cron macro.

Linux: Get Time in Timezone

unix linux
Explains how to get the current time in a different timezone on Linux without changing the system timezone.