请大虾帮我看一下我的samba启动脚本

chenkaixing

请大虾帮我看一下我的samba启动脚本，现在执行后报bad substitution



#!/sbin/sh
# Start Samba smb services


#set enviroment
PATH=/usr/bin:/sbin:/usr/sbin:/usr/local/samba/bin; export PATH
SAMBA_DIR=/usr/local/samba
SAMBA_SMBD_DEBUG_LEVEL=0
SAMBA_NMBD_DEBUG_LEVEL=0
SAMBA_SMBD_LOG=/var/opt/samba/log.smb
SAMBA_NMBD_LOG=/var/opt/samba/log.nmb
#function for kill all processes matching a certain name
kill_proc () {
    ps -ef | grep "$1" | grep -v grep |
    while read PROC; do
        PID=`echo ${PROC} |awk '{print $2}'`
        [${PID} - gt 0] && kill ${PID}
    done
    }

case "$1" in
'start')
     ${SAMBA_DIR}/bin/smbd -D -d ${SAMBA_SMBD_DEBUG_LEVEL=0 } \
         -l ${SAMBA_SMBD_LOG=/var/opt/samba/log.smb}
     ${SAMBA_DIR}/bin/nmbd -D -d ${SAMBA_NMBD_DEBUG_LEVEL=0 } \
         -l ${SAMBA_NMBD_LOG=/var/opt/samba/log.nmb}
     echo "Samba services started."
     ;;
'stop')
    kill_proc "${SAMBA_DIR}/bin/nmbd"
         kill_proc "${SAMBA_DIR}/bin/smbd"
    echo "SMBA services stopped."
    ;;
*) echo "usage: $0 {start | stop}";exit1;;
esac
exit 0