How to use shell to count the utilization of CPU, memory and hard disk
This article mainly introduces how to use shell to count the usage of CPU, memory and hard disk. It has certain reference value, and interested friends can refer to it. I hope you can learn a lot after reading this article.
The code is as follows:
#! / bin/bash
# This script is use for describle CPU Hard Memery Utilization
Total=0
Idle=0
System=0
User=0
Nice=0
Mem=0
Vmexec=/usr/bin/vmstat
Which sar > / dev/null 2 > & 1
If [$?-ne 0]
Then
Ver= `vmstat-V | awk'{printf $3}'`
Nice=0
Temp= `vmstat 1 3 | tail-1`
User= `echo $temp | awk'{printf ("% s\ n", $13)}'`
System= `echo $temp | awk'{printf ("% s\ n", $14)}'`
Idle= `echo $temp | awk'{printf ("% s\ n", $15)}'`
Total= `echo | awk'{print (c1+c2)} 'c1=$system c2echo $user`
Fi
Echo "# CPU Utilization#"
Echo "Total CPU is already use: $total"
Echo "CPU user is already use: $user"
Echo "CPU system is already use: $system"
Echo "CPU nice is already use: $nice"
Echo "CPU idle is already use: $idle"
Echo
Root_use=$ (df-lh | awk 'NR==2' | awk' {print $5}')
Dev_use=$ (df-lh | awk 'NR==3' | awk' {print $5}')
Dev_shm_use=$ (df-lh | awk 'NR==4' | awk' {print $5}')
Echo "# Hard Utilization#"
Echo "/ is already use: $root_use"
Echo "/ dev is already use: $dev_use"
Echo "/ dev/shm is already use: $dev_shm_use"
Echo
Memery_used=$ (free | awk 'NR==2' | awk' {print $3}')
Memery_all=$ (free | awk 'NR==2' | awk' {print $2}')
Memery_percent=$ (echo "scale=4;$memery_used / $memery_all" | bc)
Percent_part1=$ (echo $memery_percent | cut-c 2-3)
Percent_part2=$ (echo $memery_percent | cut-c 4-5)
Echo "# Memery Utilization#"
Echo "system memery is already use: $percent_part1.$percent_part2%"
Swap_used=$ (free | awk 'NR==4' | awk' {print $3}')
Swap_all=$ (free | awk 'NR==4' | awk' {print $2}')
Swap_percent=$ (echo "scale=4;$swap_used / $swap_all" | bc)
Swap_part1=$ (echo $swap_percent | cut-c 2-3)
Swap_part2=$ (echo $swap_percent | cut-c 4-5)
Echo "swap memery is already use: $swap_part1.$swap_part2%"
Echo
In the process of developing CFS, we need to monitor the real-time memory, CPU and hard disk utilization of the machine, because CFS runs on the Linux machine and can use some corresponding virtual files in Linux to calculate the memory CPU utilization, so write the following script, which is very simple, but very practical.
It consists of three parts, namely hard disk utilization, memory utilization and CPU utilization.
The code is as follows:
#! / bin/sh
# count cpu_used_rate,memory_used_rate,disk_used_rate
# @ Jayson 2012-5
# disk_used_rate
# Depend on real storage place the parameter 'Location' need to alter.
# my file is mainly stored in the sda8 partition, so it is extracted.
Location=/dev/sda8
Disk_Used_Rate=$ (df-h | grep $Location | awk'{print $5}')
Echo $Disk_Used_Rate
# memory_used_rate
LoadMemory=$ (cat / proc/meminfo | awk'{print $2}')
Total=$ (echo $LoadMemory | awk'{print $1}')
Free1=$ (echo $LoadMemory | awk'{print $2}')
Free2=$ (echo $LoadMemory | awk'{print $3}')
Free3=$ (echo $LoadMemory | awk'{print $4}')
Used= `expr $Total-$Free1-$Free2-$Free3`
Used_Rate= `expr $Used/$Total*100 | bc-l`
Memory_Used_Rate= `expr $Used_Rate/1 | bc`
Echo $Memory_Used_Rate%
# cpu_used_rate
Log1=$ (cat / proc/stat | grep 'cpu' | awk'{print $2 "" $3 "" $4 "" $5 "" $6 "" $7 "" $8}')
Sys1=$ (echo $Log1 | awk'{print $4}')
Total1=$ (echo $Log1 | awk'{print $1 / 2 / 3 / 4 / 5 / 6 / 7}')
Sleep 0.5
Log2=$ (cat / proc/stat | grep 'cpu' | awk'{print $2 "" $3 "" $4 "" $5 "" $6 "" $7 "" $8}')
Sys2=$ (echo $Log2 | awk'{print $4}')
Total2=$ (echo $Log2 | awk'{print $1 / 2 / 3 / 4 / 5 / 6 / 7}')
Sys= `expr $Sys2-$Sys1`
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