nushell/docs/commands/which.md

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# which
Finds a program file.
Usage:
> which <application> {flags}
## Parameters
- application: the name of the command to find the path to
## Flags
- --all: list all executables
## Examples
`which` finds the location of an executable:
```shell
/home/bob> which python
━━━━━━━━┯━━━━━━━━━━━━━━━━━┯━━━━━━━━━
arg │ path │ builtin
────────┼─────────────────┼─────────
python │ /usr/bin/python │ No
━━━━━━━━┷━━━━━━━━━━━━━━━━━┷━━━━━━━━━
/home/bob> which cargo
━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━
arg │ path │ builtin
───────┼────────────────────────────┼─────────
cargo │ /home/bob/.cargo/bin/cargo │ No
━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━
```
`which` will identify nushell commands:
```shell
/home/bob> which ls
━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━
arg │ path │ builtin
─────┼──────────────────────────┼─────────
ls │ nushell built-in command │ Yes
━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━
/home/bob> which which
━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━
arg │ path │ builtin
───────┼──────────────────────────┼─────────
which │ nushell built-in command │ Yes
━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━
```
Passing the `all` flag identifies all instances of a command or binary
```shell
/home/bob> which ls --all
━━━┯━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━
# │ arg │ path │ builtin
───┼─────┼──────────────────────────┼─────────
0 │ ls │ nushell built-in command │ Yes
1 │ ls │ /usr/bin/ls │ No
━━━┷━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━
```
`which` will also identify local binaries
```shell
/home/bob> touch foo
/home/bob> chmod +x foo
/home/bob> which ./foo
━━━━━━━┯━━━━━━━━━━━━━━━┯━━━━━━━━━
arg │ path │ builtin
───────┼───────────────┼─────────
./foo │ /home/bob/foo │ No
━━━━━━━┷━━━━━━━━━━━━━━━┷━━━━━━━━━
```