shell scripting Archives - Servers Academy

Transparent crystal switch directing a turquoise sphere toward two paths, representing Linux command success and failure exit codes.

Linux Exit Codes Explained: $?, Status Codes, &&, ||, and Shell Scripts

September 27, 20261104

Linux control flow A command can print reassuring output and still fail. Another command can finish silently and succeed. The shell does not decide from

Transparent glass routing system splitting a turquoise data stream into separate Linux input, output, and error channels.

Linux & Administration

Linux Standard Streams Explained: stdin, stdout, stderr, Redirection, and Pipes

September 27, 2026288

A Linux command can read from your keyboard, print useful data to the terminal, report an error somewhere else, or send its output directly into another command.