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Location Of Command (which)

Locate command origin

Description

which locates a command’s origin. If stdout is a TTY, then it’s output will be human readable. If stdout is a pipe then it’s output will be a simple list.

which can take multiple parameters, each representing a different command you want looked up.

Usage

which command... -> <stdout>

Examples

TTY output

» which cat dog jobs git dug
cat => (/bin/cat) cat - concatenate and print files
dog => unknown
jobs => (alias) fid-list --jobs => (builtin) Lists all running functions within the current Murex session
git => (/opt/homebrew/bin/git -> ../Cellar/git/2.41.0/bin/git) git - the stupid content tracker
dug => (murex function) A bit like dig but which outputs JSON

Piped output

» which cat dog jobs git dug -> cat
/bin/cat
unknown
alias
/opt/homebrew/bin/git
function

Detail

There are a few different types of commands:

alias

This will be represented in which and type by the term alias and, when stdout is a TTY, which will follow the alias to print what command the alias points to.

function

This is a Murex function (defined via function) and will be represented in which and type by the term function.

private

This is a private function (defined via private) and will be represented in which and type by the term private.

builtin

This is a shell builtin, like out and exit. It will be represented in which and type by the term builtin.

external executable

This is any other external command, such as systemctl and python. This will be represented in which by the path to the executable. When stdout is a TTY, which will also print the destination path of any symlinks too.

In type, it is represented by the term executable.

See Also

• Alias Pointer (alias): Create an alias for a command
• Display Command Type (type): Command type (function, builtin, alias, etc)
• Execute External Command (exec): Runs an executable
• Execute Shell Function or Builtin (fexec): Execute a command or function, bypassing the usual order of precedence.
• Exit Murex (exit): Exit murex
• Output String (out): Print a string to the stdout with a trailing new line character
• Public Function (function): Define a function block

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This document was generated from builtins/core/management/which_doc.yaml.