I need help to write this short Linux script to do the follow and the file is fa
ID: 3877984 • Letter: I
Question
I need help to write this short Linux script to do the follow and the file is falled testscript.sh:
The script will display only requested information in three visually distinct sections. The output must be succinct (brief & clear), well formatted, and may not exceed one screen.
Verify service status for the following services:
NetworkManager is turned off
Network service is turned on
Firewalld is turned off
Selinux is disabled
o Network settings to display:
IP address for “red” and “blue” interface, including the interface name
DNS server(s)
Order of hostname resolution
Contents of host file
Default gateway
Explanation / Answer
check the network Gateway
#!/bin/bash
#network
#Mike.Xu
while : ; do
time='date +%m"-"%d" "%k":"%M'
day='date +%m"-"%d'
rx_before='ifconfig eth0|sed -n "8"p|awk '{print $2}'|cut -c7-'
tx_before='ifconfig eth0|sed -n "8"p|awk '{print $6}'|cut -c7-'
sleep 2
rx_after='ifconfig eth0|sed -n "8"p|awk '{print $2}'|cut -c7-'
tx_after='ifconfig eth0|sed -n "8"p|awk '{print $6}'|cut -c7-'
rx_result=$[(rx_after-rx_before)/256]
tx_result=$[(tx_after-tx_before)/256]
echo "$time Now_In_Speed: "$rx_result"kbps Now_OUt_Speed: "$tx_result"kbps"
sleep 2
done
System Monitoring
#!/bin/sh
#systemstat.sh
#Mike.Xu
IP=192.168.1.227
top -n 2| grep "Cpu" >>./temp/cpu.txt
free -m | grep "Mem" >> ./temp/mem.txt
df -k | grep "sda1" >> ./temp/drive_sda1.txt
#df -k | grep sda2 >> ./temp/drive_sda2.txt
df -k | grep "/mnt/storage_0" >> ./temp/mnt_storage_0.txt
df -k | grep "/mnt/storage_pic" >> ./temp/mnt_storage_pic.txt
time=`date +%m"."%d" "%k":"%M`
connect=`netstat -na | grep "219.238.148.30:80" | wc -l`
echo "$time $connect" >> ./temp/connect_count.txt
Full system check
#!/bin/bash
# check_xu.sh
# 0 * * * * /home/check_xu.sh
DAT="`date +%Y%m%d`"
HOUR="`date +%H`"
DIR="/home/oslog/host_${DAT}/${HOUR}"
DELAY=60
COUNT=60
# whether the responsible directory exist
if ! test -d ${DIR}
then
/bin/mkdir -p ${DIR}
fi
# general check
export TERM=linux
/usr/bin/top -b -d ${DELAY} -n ${COUNT} > ${DIR}/top_${DAT}.log 2>&1 &
# cpu check
/usr/bin/sar -u ${DELAY} ${COUNT} > ${DIR}/cpu_${DAT}.log 2>&1 &
#/usr/bin/mpstat -P 0 ${DELAY} ${COUNT} > ${DIR}/cpu_0_${DAT}.log 2>&1 &
#/usr/bin/mpstat -P 1 ${DELAY} ${COUNT} > ${DIR}/cpu_1_${DAT}.log 2>&1 &
# memory check
/usr/bin/vmstat ${DELAY} ${COUNT} > ${DIR}/vmstat_${DAT}.log 2>&1 &
# I/O check
/usr/bin/iostat ${DELAY} ${COUNT} > ${DIR}/iostat_${DAT}.log 2>&1 &
# network check
/usr/bin/sar -n DEV ${DELAY} ${COUNT} > ${DIR}/net_${DAT}.log 2>&1 &
#/usr/bin/sar -n EDEV ${DELAY} ${COUNT} > ${DIR}/net_edev_${DAT}.log 2>&1 &
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