Shell 脚本编程

Shell 两个数据比较取差异

 flag=0
 local array1=("a" "b")
 local array2=("a" "c")
 for a in ${array2[@]}
 do
  for b in ${array1[@]}
  do
   if [ "$b" = "$a" ]; then
    flag=1
    break
   fi
  done
  if [ $flag -eq 0 ]; then
   echo $a>>result
  else
   flag=0
  fi
 done

Shell获取当前执行.sh文件所在目录

ipath=$(cd `dirname $0`; pwd)

Shell在.sh文件中运行命令

`rm -rf index*`

Shell字符串分割相当于split

str="a-b-c"
IFS="-"
array_str=($str)

Shell命令访问某个网址并判断其有效性

result=`wget http://www.baidu.com 2>&1|grep 200`
if [ -z "$result" ]; then
   echo "百度可以访问"
fi

Shell读取文件中每行内容循环操作

while read line
do
 `kill -9 $line`
done<yourfile