Linux Learning Note-type command

Grammar:

Type [-TPA] Name

Parameters:

Type: When no arguments are added, the type shows whether the name is an external command or internal bash built-in command

-T: When the-t parameter is added, the type will show the meaning of name with the following words

File: Represented as an external command

Alias: Indicates the name that the command is set for the command alias

Builtin: Indicates that the command functions as a bash built-in command

-P: The full file name is displayed if the next name is an external command

-A: A path defined by the path variable that lists all commands that contain name, including the alias

Example: Query ls whether this command is bash built-in

[[Email protected] ~]# type ls

LS is aliased to ' LS--color=auto '

[[email protected] ~]# type-t ls

Alias

[[email protected] ~]# type-a ls

LS is aliased to ' LS--color=auto '

LS Is/bin/ls

Example two: Query CD

[[Email protected] ~]# type cd

CD is a shell builtin

[[email protected] ~]# type-t CD

Builtin

[[email protected] ~]# type-a CD

CD is a shell builtin

This article is from the "perfect start" blog, be sure to keep this source http://7184803.blog.51cto.com/7174803/1413377