# THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T
# The copyright notice above does not evidence any
# actual or intended publication of such source code.
#ident "@(#)/bin/dirname.sl 1.1 3.0 09/09/85 59562 "
if [ $# -gt 1 ]
then
echo >&2 "Usage: dirname [ path ]"
exit 1
fi
# First check for pathnames of form //*non-slash*/* in which case the
# dirname is /.
# Otherwise, remove the last component in the pathname and slashes
# that come before it.
# If nothing is left, dirname is "."
exec /bin/expr \
"${1:-.}/" : '\(/\)/*[^/]*//*$' \| \
"${1:-.}/" : '\(.*[^/]\)//*[^/][^/]*//*$' \| \
.
