Shell script to display - Memory usage, Disk Usage and CPU Load?
awk, bash, linux, shell, unix
Solution
Try escaping the `%`:
printf "Memory Usage: %s/%sMB (%.2f%%)\n"
Problem
I want to diplay the Memory usage, Disk Usage and CPU Load in the following format: ``` Memory Usage: 33/512MB (6%) Disk usage: 4.2/20GB (23%) CPU Load: 0.01 ``` So I started using the below script to do that but somehow it gives me an error ``` #!/bin/bash free -m | awk 'NR==2{printf "Memory Usage: %s/%sMB (%.2f%)\n", $3,$2,$3*100/$2 }' df -h | awk '$NF=="/"{printf "Disk Usage: %d/%dGB (%s)\n", $3,$2,$5}' top -bn1 | grep load | awk '{printf "CPU Load: %.2f\n", $(NF-2)}' ``` Below is the error I get - ``` awk: run time error: not enough arguments passed to printf("Memory Usage: %s/%sMB (%.2f%) ") FILENAME="-" FNR=2 NR=2 ``` I am running ubuntu 12.04. Any idea what's wrong? Update:- After running my below shell script - ``` #!/bin/bash free -m | awk 'NR==2{printf "Memory Usage: %s/%sMB (%.2f%%)\n", $3,$2,$3*100/$2 }' df -h | awk '$NF=="/"{printf "Disk Usage: %d/%dGB (%s)\n", $3,$2,$5}' top -bn1 | grep load | awk '{printf "CPU Load: %.2f\n", $(NF-2)}' ``` I got below output - ``` Memory Usage: 128504/128896MB (99.70%) Disk Usage: 3/48GB (8%) CPU Load: 0.40 ``` Does CPU Load looks ok? What does 0.40 means? And what number I should say will be high for CPU Load?