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batch check linux host

Selfish Salmon answered on September 6, 2022 Popularity 1/10 Helpfulness 1/10

answer batch check linux host

batch check linux host

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#!/bin/bash
# checking network connectivity

# IPs and ports to check
# Ignore blank lines and treat hash sign as comments
# comments will be kept as a comment of result
IP_PORT="
# local host 
127.0.0.1 22
127.0.0.1 21
# well known sites
www.google.com 80
www.baidu.com 80
"

# checking
echo "$IP_PORT" | grep -Ev "^$" |
while read line;do
  # simply print comment line
  echo "$line" | grep -qE "^#"
  if [ $? -eq 0 ];then
      echo "$line"
      continue
  fi

  # normal line with ip and port
  connectFlag="DOWN"
  nc -z -w 1 $line
  if [ $? -eq 0 ];then
      connectFlag="UP"
  fi

  printf "%-20s %5s %5s\n" $line $connectFlag
done

Popularity 1/10 Helpfulness 1/10 Language shell

Source: zhuanlan.zhihu.com

Tags: host linux shell

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