type (Unix)

In Unix, type is a command that describes how its arguments would be interpreted if used as command names.

Function

Where applicable, type will display the command name's path. 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.

The type command was added to the Bourne Shell in 1984 with SVR2 but is not part of the POSIX standard. With a POSIX shell, similar behavior is retrieved with

command -V name

In the Korn shell, the command whence provides similar functionality.^[1]

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

Unix command-line interface programs and shell builtins

File system	cat chmod chown chgrp cksum cmp cp dd du df file fsck fuser ln ls mkdir mount mv pax pwd rm rmdir split tee touch type umask

Processes	at bg chroot cron fg kill killall nice pgrep pkill ps pstree time top

User environment	clear env exit finger history logname mesg passwd su sudo uptime talk tput uname w wall who whoami write

Text processing	awk banner basename comm csplit cut diff dirname ed ex fmt fold head iconv join less more nl paste printf sed sort spell strings tail tr uniq vi wc xargs yes

Shell builtins	alias cd echo test unset wait

Networking	dig host ifconfig inetd netcat netstat nslookup ping rdate rlogin route ssh traceroute

Searching	find grep locate whatis whereis

Documentation	apropos help man

Miscellaneous	bc dc cal expr lp od sleep true and false

List of Unix commands

References

↑ Siever, Ellen (2005). Linux in a Nutshell. Nutshell handbooks. O'Reilly Media, Inc. 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.

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type (Unix)

Function

Examples

See also

References