linux 带ssh和scp功能的集群控制脚本

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#!/bin/bash #创建一个以.sc结尾的文件，把要操作的主机按顺序填写进去,多个IP另起一行顶格填写例如: #192.168.0.1 #192.168.0.2 #确保当前操作脚本的主机，已经可以免密到被操作主机，如未完成请自行解决。 do_command() {         hosts=`sed -n '/^[^#]/p' *.sc`         for host in $hosts                 do                         echo ""                         echo HOST $host                         ssh $host "$to_input"                 done         return 0 }   scp_command() {         hosts=`sed -n '/^[^#]/p' *.sc`         for host in $hosts                 do                         echo ""                         echo HOST $host                         scp -r ${to_scp#*/} $host:/tmp                 done         return 0 } PS3="选择要执行的命令按数字: 1)bash 或 2)scp (退出请按 3)exit 或 Ctrl+c): " select to_chose in ssh scp exit ;do           case $to_chose in         ssh)         while true;do                 read -ep "输入要执行的Linux命令例:ls,df,free...(回到上一级输入"exit"):" to_input                 echo "------------------------------------------------------------------------->"                 echo -e "\033[31m执行命令 : "$to_input" \033[0m"         if [[ $to_input == exit ]];then                 break         else                 do_command "$to_input"                 echo "------------------------------------------------------------------------->"         fi         done         ;;         scp)         while true;do         echo "当前目录(回到上一级输入"exit"): "         ls         read -ep "请输入要传送的文件或目录的名字(多个文件或目录以空格分隔):" to_scp         #可以用ls查看非当前目录要传送的文件或目录，可用tab键查看内容和补全功能。         echo "------------------------------------------------------------------------->"         echo -e "\033[31m传输的内容 : "${to_scp#*/}" \033[0m"         if [[ ${to_scp#*/} == exit ]];then                 break         else         scp_command "${to_scp#*/}"         echo "------------------------------------------------------------------------->"         fi         done         ;;         exit)                 break         ;;         *)         echo -e "\033[35m输入的不是规定的参数,取消执行命令! (请输入数字1或2操作指令bash/scp,退出请输入数字:" 3/exit ")\033[0m"           echo ""         echo "=====================================================>"         esac done