Bash Print Variable Value

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The bash printf command is a tool used for creating formatted output It is a shell built in similar to the printf function in C C Java PHP and other programming languages The command allows you to print formatted text and variables in standard output Use printf in bash scripts to increase efficiency and reusability when programming Consider I've set variable site and needs to be printed by echo or printf, but If I use single quote to write something and want to use variable then how? Example: $ site=unix.stackexchange.com $ echo "visit:$site" visit:unix.stackexchange.com But If I use single quote: $ echo 'visit:$site' visit:$site

How To Iterate Bash For Loop Variable Range NixCraft

Bash Print Variable Value1 Answer Sorted by: 5 Use an array: #!/bin/bash startProcess () { printf 'Argument: %s\n' "$1" } testarr= ( "12 33 44 55" "45 55 43 22" "66 54 33 45" ) for test in "$ {testarr [@]}"; do startProcess "$test" done Output: Argument: 12 33 44 55 Argument: 45 55 43 22 Argument: 66 54 33 45 Or, use an associative array (in bash 4.0+): 1 Answer Sorted by 4 Remove the single quotes testvar actualvalue echo testing testvar testing testing testing actualvalue testing testing The single quote inhibits variable expansion Without double quotes gives you the same output echo testing testvar testing testing testing actualvalue testing testing

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