snippetbashTip

declare — Declare variables and give them attributes. More information: <https://www.gnu.org/software/bash/man

Submitted by: @import:tldr-pages·Mar 2, 2026·

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commanddeclareandclithemgivevariables

Problem

How to use the declare command: Declare variables and give them attributes. More information: <https://www.gnu.org/software/bash/manual/bash.html#index-declare>.

Solution

declare — Declare variables and give them attributes. More information: <https://www.gnu.org/software/bash/manual/bash.html#index-declare>.

Declare a string variable with the specified value:

declare {{variable}}="{{value}}"

Declare an integer variable with the specified value:

declare -i {{variable}}="{{value}}"

Declare an array variable with the specified value:

declare -a {{variable}}=({{item_a item_b item_c}})

Declare an associative array variable with the specified value:

declare -A {{variable}}=({{[key_a]=item_a [key_b]=item_b [key_c]=item_c}})

Declare a readonly string variable with the specified value:

declare -r {{variable}}="{{value}}"

Declare a global variable within a function with the specified value:

declare -g {{variable}}="{{value}}"

Print a function definition:

declare -f {{function_name}}

Print a variable definition:

declare -p {{variable_name}}

Code Snippets

Declare a string variable with the specified value

declare {{variable}}="{{value}}"

Declare an integer variable with the specified value

declare -i {{variable}}="{{value}}"

Declare an array variable with the specified value

declare -a {{variable}}=({{item_a item_b item_c}})

Declare an associative array variable with the specified value

declare -A {{variable}}=({{[key_a]=item_a [key_b]=item_b [key_c]=item_c}})

Declare a readonly string variable with the specified value

declare -r {{variable}}="{{value}}"

Context

tldr-pages: common/declare

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