start_hadoop的博客

#!/bin/bash #1 获取输入参数个数，如果没有参数，直接退出 pcount=$# if((pcount==0)); then echo no args; exit; fi #2 获取文件名称 p1=$1 fname=basename $p1 echo fname=$fname #3 获取上级目录到绝对路径 pdir=cd -P $(dirname $p1); pwd echo pdir=$pdir #4 获取当前用户名称 user=whoami #5 循环 for((host=103; host&

#!/bin/bash for i in haotian@hadoop102 haotian@hadoop103 haotian@hadoop104 do echo “=========== $i ===========” ssh $i ‘/opt/module/jdk1.8.0_144/bin/jps’ done