#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# some systems, like old SunOS, have stat on /dev/fd/N and fstat(N, ...)
# return different results
: ${TMPDIR:=/tmp}

trap 'rm -f ${TMPDIR}/pipe' 0 1 2 3 6 15

exec 6>&-
echo "t -p /dev/fd/6"
test -p /dev/fd/6
echo $?

rm -f ${TMPDIR}/pipe 2>/dev/null
mkfifo ${TMPDIR}/pipe
cat < ${TMPDIR}/pipe &
exec 6>&-
exec 6>${TMPDIR}/pipe
echo "t -p /dev/fd/6"
test -p /dev/fd/6
echo $?
exec 2>/dev/null	# disable process termination message
kill $! 2>/dev/null