type (Unix)
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In Unix and Unix-like operating systems, type is a command that describes how its arguments would be interpreted if used as command names.
Function
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Where applicable, type will display the command name's path.[1][2] Possible command types are:
- shell built-in
- function
- alias
- hashed command
- keyword
The command returns a non-zero exit status if command names cannot be found.
Examples
$ type test
test is a shell builtin
$ type cp
cp is /bin/cp
$ type unknown
unknown not found
$ type type
type is a shell builtin
History
The type command was a shell builtin for Bourne shell that was introduced in AT&T's System V Release 2 (SVR2) in 1984,[3] and continues to be included in many other POSIX-compatible shells such as Bash. However, type is not part of the POSIX standard. With a POSIX shell, similar behavior is retrieved with
command -V name
In the KornShell, the command whence provides similar functionality.[4]
The command is available as a separate package for Microsoft Windows as part of the UnxUtils collection of native Win32 ports of common GNU Unix-like utilities.[5]
See also
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References
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