| WHICH(1) | General Commands Manual | WHICH(1) | 
which —
| which | [ -a] name
      [...] | 
which takes a list of names and looks for the files
  which would be executed had these names been given as commands. Each argument
  is searched for along the user's PATH.
If the -a flag is given,
    which will continue to search the
    PATH until all instances of a program file are
    found.
which command appeared in
  3.0BSD.
| April 23, 1991 | NetBSD 10.0 |