Cacher is the code snippet organizer for pro developers

#!/bin/bash
# 4.2 for 语句
# 检查多个主机是否存活（太慢）
for ip in 192.168.1.{1..5}; do
    if ping -c 1 $ip >/dev/null; then
        echo "$ip OK."
    else
        echo "$ip NO!"
    fi
done