# which service
/sbin/service

# more /sbin/service
#!/bin/sh

# Set up a default search path.
PATH="/sbin:/usr/sbin:/bin:/usr/bin:/usr/X11R6/bin"
export PATH

VERSION="`basename $0` ver. 0.91"
USAGE="Usage: `basename $0` < option > | --status-all | \
[ service_name [ command | --full-restart ] ]"
SERVICE=
SERVICEDIR="/etc/init.d"
OPTIONS=

if [ $# -eq 0 ]; then
   echo $"${USAGE}" >&2
   exit 1
fi

cd /
while [ $# -gt 0 ]; do
  case "${1}" in
    --help | -h | --h* )
       echo $"${USAGE}" >&2
       exit 0
       ;;
    --version | -V )
       echo $"${VERSION}" >&2
       exit 0
       ;;
    *)
       if [ -z "${SERVICE}" -a $# -eq 1 -a "${1}" = "--status-all" ]; then
          cd ${SERVICEDIR}
          for SERVICE in * ; do
            case "${SERVICE}" in
              functions | halt | killall | single| linuxconf| kudzu | \
                  *rpmorig | *rpmnew | *rpmsave | *~ | *.orig)
                  ;;
              *)
.....