See what a program does before deciding whether you really want it to happen.

Pipelines are an extremely useful (and surprisingly underused) architectural pattern in modern software engineering. The concept of using pipes and filters to control the flow of data through software has been around since the 1970s, when the first Unix shells were created. If you’ve ever used the pipe (“|”) character in a terminal emulator, you’ve made use of the pipe-and-filter idiom.

The TTY subsystem is central to the design of Linux, and UNIX in general. Unfortunately, its importance is often overlooked, and it is difficult to find good introductory articles about it. I believe that a basic understanding of TTYs in Linux is essential for the developer and the advanced user.

This tool can be described as a Tiny Dirty Linux Only C command that looks for coreutils basic commands (cp, mv, dd, tar, gzip/gunzip, cat, ...) currently running on your system and displays the percentage of copied data.

for i in pidof python; do cat /proc/$i/cmdline | tr "\0" " " | sed "s/$/ $i\n/"; done

strace usage example !

Connaître rapidement le taux d’occupation de vos disques et de vos répertoires sous GNU/Linux – La vache libre

Some example , how to use pseudo terminals