Set an environment variable. Mark each name to be passed to child processes in the environment.
Syntax export [-fn] [-p] [name[=value]] Options -f The names refer to shell functions; otherwise the names refer to shell variables -n No longer mark each name for export. -p Display output in a form that can be reused as input.
If no names are supplied, or if the `-p' option is given, a list of exported names is displayed.
The return status is zero unless an invalid option is supplied, one of the names is not a valid shell variable name, or `-f' is supplied with a name that is not a shell function.
export is a bash built in command.
Example - local variables
old_file=export.csv new_file=last.csv mv $old_file $new_file
Example - global variables
mydepartment=Sales ; export mydepartment mycustomer='Brown Brothers' ; export mycustomer
"Laughter is America's most important export" ~ Walt Disney
env - Display, set, or remove environment variables
echo - Display message on screen
hostname - Print or set system name
local - Create variables
printenv - Print environment variables
readonly - Mark variables/functions as readonly
shift - Shift positional parameters
unset - Remove variable or function names
Equivalent Windows command: SETX - Set environment variables permanently