declare: declare [-aAfFilrtux] [-p] [name[=value] ...]
Set variable values and attributes.
Declare variables and give them attributes. If no NAMEs are given, display the attributes and values of all variables.
Options which set attributes:
-a to make NAMEs indexed arrays (if supported) -A to make NAMEs associative arrays (if supported) -i to make NAMEs have the `integer' attribute -l to convert NAMEs to lower case on assignment -r to make NAMEs readonly -t to make NAMEs have the `trace' attribute -u to convert NAMEs to upper case on assignment -x to make NAMEs export
Using `+' instead of `-' turns off the given attribute.
Variables with the integer attribute have arithmetic evaluation (see the `let' command) performed when the variable is assigned a value.
When used in a function, `declare' makes NAMEs local, as with the `local' command.
Exit Status:
Returns success unless an invalid option is supplied or an error occurs.