Name
which
Synopsis
which [options
] [commands
]
List which files are executed if the named
commands are run as a command. which reads the user’s .cshrc file (using the source
built-in command), checking
aliases and searching the path
variable. Users of the Bourne or Korn shells can use the built-in
type command as an alternative.
(See type, Chapters 4 and 5.)
GNU/Linux Options
-a
,--all
Print all matches, not just the first.
-i
,--read-alias
Read aliases from standard input and write matches to standard output. Useful for using an alias for which.
-
--read-functions
Read shell functions from standard input and report matches to standard output. Useful for also using a shell function for which itself.
-
--show-dot
If a matching command is found in a directory that starts with a dot, print ./cmdname instead of the full pathname.
-
--show-tilde
Print a tilde (
~
) to indicate the user’s home directory. Ignored if the user isroot
.-
--skip-alias
Ignore
--read-alias
if present. Useful for finding normal binaries while using--read-alias
in an alias for which.-
--skip-dot
Skip directories that start with a dot.
-
--skip-functions
Ignore
--read-functions
if present. Useful when searching for normal binaries while using--read-functions
in an alias or function for which.-
--skip-tilde
Skip directories that start with a tilde (
~
) and executables in $HOME.-
--tty-only
Stop processing options on the right if not on a terminal.
-v
,-V
,--version
Print version information and then exit.
Example
$ which file ls
/usr/bin/file ...
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