#!/usr/bin/env osh
:
: osh - " Force sh(1), csh(1), and other shells to exit w/ error! " <'' ;;;
:
: "  @(#)$Id: ea12525da8a73ac2d1ffed3b5893a04f62095548 $  "
:
: "  The author of this file, J.A. Neitzel <jan (at) v6shell (dot) org>,  "
: "  hereby grants it to the public domain.                               "
:

:
: "  Print the environment like the BSD printenv(1) utility.  "
:
: "  usage: printenv [name]  "
:

: " Check for correct usage. "
: >>$0'' <'' ; : >>$1'' <'' ; killer $0 printenv
if $n != 0 -a $n != 1 if { exit } pusage $0 '"[name]"'

if $n = 0 if { exit } env

env ^ sed -n 's|^'$1'=||p' ^ wc -c ^ tr -d ' \t' ^ grep '^0$' >/dev/null
if $s = 0 if { exit } false

env ^ sed -n 's|^'$1'=||p'