Search Commands

which Linux Command

Shows the full path of the executable that would run for a given command.

What does which do?

Shows the full path of the executable that would run for a given command.

which command

which python3

How do I find the path of a command?

Use `which commandname` to see the full path of the executable. For example, `which python3` might show `/usr/bin/python3`.

How do I check if a command exists?

Use `which commandname` and check the exit code. If it returns a path, the command exists. If not, it is not installed.

How do I see all versions of a command?

Use `which -a commandname` to show all locations in the PATH where the command is found.

What is the difference between which and whereis?

`which` shows the executable path. `whereis` shows the binary, source files, and manual page locations.

How do I see what command an alias refers to?

Use `which commandname` to see the underlying command for an alias, or `type commandname` for more detailed information.

How do I check which Python is the default?

Use `which python` or `which python3` to see which Python interpreter is used when you run the command.

How do I find where a command is installed?

Use `which commandname` for the executable path, or `whereis commandname` for binary, source, and man page locations.

How do I see if a command is an alias?

Use `type commandname` which shows if the command is an alias, builtin, function, or external program.

Quickly finds files by name using a pre-built database (run updatedb to refresh).

Locates the binary, source, and manual page files for a command.

Searches for patterns (text or regex) inside files and prints matching lines.

Displays how a command name would be interpreted (alias, builtin, external, etc.).

Searches for files and directories in a directory hierarchy by name, type, size, etc.

Powerful text processing language for pattern scanning and data extraction.