Bash

Bash is a shell commonly used in Linux-based operating systems. Mastering Bash allows you to combine results from Linux utilities and create your own, which is a straightforward way to optimize tasks.

Operators

Operators available in bash are shown in the table above by groups.

Operator Group	Operators	Description
Arithmetic Operators	+, -, *, /, %, **	Perform mathematical calculations.
Comparison Operators	-eq, -ne, -gt, -ge, -lt, -le	Compare values.
Logical Operators	&&, ||, !	Combine multiple conditions.
String Operators	=, !=, -z, -n	Compare and manipulate strings.
File Test Operators	-e, -f, -d, -r, -w, -x	Test file properties.
Redirection Operators	>, >>, <, 2>, 2>>, &>, &>>	Redirect input and output of commands.
Control Operators	;, &&, ||, (), {}	Control execution flow of commands.
Pipeline Operators	|	Pass output of one command as input to another.