更新主机列表文件的脚本

--> 　　脚本功能简单，但用起来很方便，当你管理多台Linux主机的时候，就用它来更新主机列表文件吧！将脚本命名为hostlist.sh，并将其放入PATH路径中！根据自己的请况定义变量的值。

#!/bin/sh

#定义数量


TMPFILE="/tmp/hostlist"         #临时文件

#指定主机列表文件
HOSTLIST=$(echo ~/company/hostlist)
#这里是需要更新的主机列表
ARGS="$*"
#为每台主机更新
for host in $ARGS;
do
        echo "Create a hosts file for $host ..."
        HOSTNAME=$(ssh -l root $host "hostname")
        echo "127.0.0.1               $HOSTNAME localhost.localdomain localhost" >$TMPFILE
        echo >>$TMPFILE
        cat $HOSTLIST >>$TMPFILE
        echo "update the hosts file for $host ..."
        cat $TMPFILE |ssh -l root $host "cat >/etc/hosts"
        echo "The hosts file on $host has been updated."
done

用法示例

[supersun@supersunHP ~]$hostlist.sh  host1 host2 host3
Create a hosts file for  host1 ...
update the hosts file for host1 ...
The hosts file on host1 has been updated.
......