env(1)

     NAME
          env - run a program in a modified environment

     SYNOPSIS
          env [-] [-i] [-u name] [--ignore-environment] [--unset=name]
          [--help] [--version] [name=value]... [command [args...]]
          env

     DESCRIPTION
          This documentation is no longer being maintained and may be
          inaccurate or incomplete.  The Texinfo documentation is now
          the authoritative source.

          This manual page documents the GNU version of env.  env runs
          a command with an environment modified as specified by the
          command line arguments.  Arguments of the form
          `variable=value' set the environment variable variable to
          value value.  value may be empty (`variable=').  Setting a
          variable to an empty value is different from unsetting it.

          The first remaining argument specifies a program to invoke;
          it is searched for according to the specification of the
          PATH environment variable.  Any arguments following that are
          passed as arguments to that program.

          If no command name is specified following the environment
          specifications, the resulting environment is printed.  This
          is like specifying a command name of `printenv'.

        OPTIONS
          --help
               Print a usage message on standard output and exit
               successfully.

          -u, --unset name
               Remove variable name from the environment, if it was in
               the environment.

          -, -i, --ignore-environment
               Start with an empty environment, ignoring the inherited
               environment.

          --version
               Print version information on standard output then exit
               successfully.