Posts Tagged with 'shells'

More about processes and signals: writing daemons, suspending subshells.

A true wizard doesn't just run processes, a true wizard knows how to communicate with those processes through signals to stop, restart, and even kill processes. This may sound like arcane and obscure knowledge, but if you follow along, you'll be managing your processes like an adept in no time.

You probably already know you can examine process status with ps, but most users never embrace the full power of this great little utility.

Last month's column, the second in this series of obscure Linux features that wizards should know, introduced Standard I/O. This month we'll see how to take advantage of Standard I/O from a shell-- including an example using named pipes (FIFOs).

In the second installment of the "Boot Camp for Wizards" series, Jerry Peek continues with a discussion of the standard I/O system.

Here's the start of a series on little-known topics that wizards should know. Knowledge of the Harry Potter series not required.