https://wiki.iranux.org/ 2026-06-10T03:14:20+00:00 https://wiki.iranux.org/ https://wiki.iranux.org/_media/wiki/dokuwiki.svg text/html 2024-02-02T04:47:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.iranux.org/courses/linux/beginner/bash-scripting/start?rev=1706849253&do=diff اسکریپت نویسی در Bash ---------- Double-Parentheses * <https://tldp.org/LDP/abs/html/dblparens.html> انجام ساده تر محاسبات ریاضی #!/bin/bash # c-vars.sh # Manipulating a variable, C-style, using the (( ... )) construct. echo +==========================================+ (( a = 23 )) # Setting a value, C-style, #+ with spaces on both sides of the "=". echo "a (initial value) = $a" # 23 (( a++ )) # Post-increment 'a', C-style. echo "a (after a++) = $a" # 24 …