bash: Find the type of a command.

[shoebill]

Take into account the main readme for this section. README first.

Use the type builtin.

Man page for type builtin.

printenv is a binary, alias is a shell builtin, and env is a hashed binary.

$ type printenv
printenv is /usr/bin/printenv
$ type env
env is hashed (/usr/bin/env)
$ type alias
alias is a shell builtin