#!/bin/sh
#
# $Id: yak,v 1.1 2003/02/04 01:14:21 jmates Exp $
#
# The author disclaims all copyrights and releases this document into
# the public domain.
#
# Unix diagnostic tool that saves various invocation details such as
# arguments, environment settings, and standard input to a temporary
# file for debugging.  Uses include seeing how and with what settings
# applications such as the LPRng print spooler or the Procmail mail
# delivery agent call filters or external scripts.
#
# Output is saved to a temporary file under /tmp by default.

shortname=`basename $0`
shortname=${shortname:=yak}

#OUTPUT=/dev/null
OUTPUT=`mktemp -q /tmp/${shortname}.XXXXXX`
if [ $? -ne 0 ]; then
  OUTPUT=/tmp/${shortname}.$$
fi

#logger -t $shortname "saving output to $OUTPUT"

(
if [ $# -gt 0 ]; then
  echo ARGS::BEGIN
  echo "$0 $@"
  echo ARGS::END
else
  echo ARGS::NONE
fi
echo

echo UNIX::BEGIN
echo pid=$$

# may need to fiddle with this or use other utilities to get the real
# vs. effective user and group settings
id

echo UNIX::END
echo

if test -t 0; then
  echo TTY::BEGIN
  tty
  echo TTY::END
else
  echo TTY:NONE
fi
echo

echo ENV::BEGIN
set
echo ENV::END
echo

# this will stall the script on command line waiting for input
echo STDIN::BEGIN
cat
echo STDIN::END

) >> $OUTPUT

exit 0