shell安装脚本

#!/bin/bash

MODULE_NUM=1
MODULE_MAX_NUM=5
WORK_PATH=/root/shell/workspace

#add module
add()
{
installNum=$MODULE_NUM
if [ -z $2 ]; then
echo "install default number : $MODULE_NUM"
else
installNum=$2
fi
if [ $installNum -gt $MODULE_MAX_NUM ]; then
installNum=$MODULE_MAX_NUM
fi
echo "install number is $installNum"
for i in $(seq 1 $installNum); do
do_add $i
done
}

#do the add operation
do_add()
{
if [ ! -e $WORK_PATH/test$1 ]; then
mkdir $WORK_PATH/test$1
echo "add test$1"
fi
}

#do the remove operation
do_remove()
{
if [ -d $WORK_PATH/test$1 ]; then
echo "remove module $1"
rm -rf $WORK_PATH/test$1
fi
}

#remove all modules
remove()
{
#echo "remove all modules"
for((i=1;i<=$MODULE_MAX_NUM;i++)); do
if [ -e $WORK_PATH/test$i ]; then
do_remove $i
fi
done
}

#modify modules number
modify()
{
modNum=$2
echo modify modules number to $2
for((i=$MODULE_MAX_NUM;i>$2;i--)); do
#echo "remove module $i"
do_remove $i
done
if [ $modNum -gt $MODULE_MAX_NUM ]; then
modNum=$MODULE_MAX_NUM
fi
for((i=1;i<=$modNum;i++)); do
#echo "add module $modNum"
do_add $i
done
}

#main process
case $1 in
add)
add $1 $2
;;
rmv)
remove $1
;;
mod)
modify $1 $2
;;
*)
echo -e "bad parameter, usage :
balabala..."
;;
esac