高手帮我解释一下这段脚本,谢谢!!
LIBPATH=/home/administrator/administrator/lib_modify/lib
if [ x"$LIBPATH" != x ]; then
if [ x"$LD_LIBRARY_PATH" = x ]; then
LD_LIBRARY_PATH=$LIBPATH
else
LD_LIBRARY_PATH=$LIBPATH:$LD_LIBRARY_PATH
fi
export LD_LIBRARY_PATH
fi
[ x"$LIBPATH" != x ]这句话里面的X是什么意思, LD_LIBRARY_PATH=$LIBPATH:$LD_LIBRARY_PATH这句话怎么解释,谢谢!
case $1 in
> start | begin)
> echo "start something"
> ;;
> stop | end)
> echo "stop something"
> ;;
> *)
> echo "Ignorant"
> ;;
> esac
这一个简单的脚本,我也是看了好久都没有看懂,就是那个开头 $1是什么意思,??高手指点,谢谢!!!