WHICH(1)                                             General Commands Manual                                             WHICH(1)

NAME
       which - locate a command

SYNOPSIS
       which [-as] filename ...

DESCRIPTION
       which  returns the pathnames of the files (or links) which would be executed in the current environment, had its arguments
       been given as commands in a strictly POSIX-conformant shell.  It does this by searching  the  PATH  for  executable  files
       matching the names of the arguments.  It does not canonicalize path names.

OPTIONS
       -a     print all matching pathnames of each argument

       -s     silently return 0 if all of the executables were found or 1 otherwise

EXIT STATUS
       0      if all specified commands are found and executable

       1      if one or more specified commands is nonexistent or not executable

       2      if an invalid option is specified

Debian                                                     29 Jun 2016                                                   WHICH(1)