Bash declare/typeset

External

• https://www.gnu.org/software/bash/manual/html_node/Bash-Builtins.html

Internal

• bash

Overview

declare and typeset are equivalent.

Options

-p

Without an argument, the command will display the attributes and values of each variable name.

-F

Returns the name of the functions declared in the current context. Returns output similar to:

declare -f backup
declare -f comma_separated_list_to_space_separated
declare -f debug
declare -f debug_args
declare -f debug_args_no_nl
declare -f get_user_name
...

Also see:

Function Info

-f

Returns a functions' body.

typeset -f
declare -f

Also see:

Function Info

-t

Used to detect when variables are used, with trap. Give each name the "trace" attribute. Traced functions inherit the DEBUG and RETURN traps from the calling shell. The trace attribute has no special meaning for variables.