If you've written any amount of bash code, you've likely come across the trap command. Trap allows you to catch signals and execute code when they occur. Signals are asynchronous notifications that ...

This easy. Just type logger on the command line and your message will be added to the end of the /var/log/syslog file. $ logger comment to be added to log $ tail -1 /vvar/log/syslog May 21 18:02:16 ...

While Linux systems install with thousands of commands, bash also supplies a large number of “built-ins”—commands that are not sitting in the file system as separate files, but are part of bash itself ...