#!/usr/bin/env osh
:
: osh - " Force sh(1), csh(1), and other shells to exit w/ error! " <'' ;;;
:
: "  @(#)$Id: 392ce8b4557a824bd5b917a4087f6b7f14d51965 $  "
:
: "  The author of this file, J.A. Neitzel <jan (at) v6shell (dot) org>,  "
: "  hereby grants it to the public domain.                               "
:

:
: "  If $0 == lf, alias `lf ...' to `ls -F   [options] [file ...]'.  "
: "  If $0 == li, alias `li ...' to `ls -i   [options] [file ...]'.  "
: "  If $0 == ll, alias `ll ...' to `ls -AlF [options] [file ...]'.  "
:

: " Check for correct usage. "
: >>$0'' <''
: >>$1'' <'' ; : >>$2'' <'' ; : >>$3'' <''
: >>$4'' <'' ; : >>$5'' <'' ; : >>$6'' <''
: >>$7'' <'' ; : >>$8'' <'' ; : >>$9'' <''
if ! { nametest $0 lf } -a ! { nametest $0 li } -a ! { nametest $0 ll } \
	if { exit } perror $0 '"Invalid name - try lf, li, or ll instead"'
if $n = n if { exit } perror $0 '"sh6: Invalid shell - osh(1) required"'

if $n = 0 -a { nametest $0 lf } if { exit } ls -F
if $n = 0 -a { nametest $0 li } if { exit } ls -i
if $n = 0 -a { nametest $0 ll } if { exit } ls -AlF

sigign	+	2 3
setenv	OSHDIR	/tmp/list-$u-$$
if ! { mkdir -m 0700 $d } if { exit } false

if { nametest $0 lf } echo -n ls -F    >$d/output
if { nametest $0 li } echo -n ls -i   >>$d/output
if { nametest $0 ll } echo -n ls -AlF >>$d/output

: Loop
	: >>$1'' <''
	echo -n \ \'$1\' >>$d/output ; shift
	if $n != 0 goto Loop

echo >>$d/output
<$d/output ( rm -r $d ; osh - )