Type (Unix)
In today's world, Type (Unix) has become a topic of great relevance and interest to a wide spectrum of society. Both experts and amateurs, studious and curious, have found in Type (Unix) a fertile field for exploration and debate. With the advancement of technology and globalization, Type (Unix) has acquired even greater relevance, becoming an object of study and interest in various areas of knowledge. In this article, we will delve into the fascinating world of Type (Unix), exploring its impact, its evolution over time and the different perspectives from which it can be approached.
&sq=&lang=en&file=File:Type_command_example.png) Examples of type command | |
| Original author(s) | AT&T Corporation |
|---|---|
| Developer(s) | Various open-source and commercial developers |
| Initial release | 1984 |
| Operating system | Unix and Unix-like |
| Platform | Cross-platform |
| Type | Command |
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
- ^ "Use Type Command in Linux to Get More Info About Commands". Linux Handbook. 2020-05-11. Retrieved 2025-02-09.
- ^ "type command in Linux with Examples". GeeksforGeeks. 2019-05-06. Retrieved 2025-02-09.
- ^ "traditional Bourne shell family / history and development". www.in-ulm.de. Retrieved 2018-10-07.
- ^
Siever, Ellen (27 July 2005). Linux in a Nutshell. Nutshell handbooks. O'Reilly Media, Inc. (published 2005). p. 695. ISBN 9780596009304. Retrieved 2016-07-05.
whence Korn shell only. Show whether each command is a Unix command, a built-in command, a defined shell function, or an alias.
- ^ Native Win32 ports of some GNU utilities
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