How to change this code /proc/meminfo from kb to mb/gb?

Question

I got right now this in the code

`cat /proc/meminfo | 
   grep MemFree | 
   awk {'print $2'}`kB (Free) / `cat /proc/meminfo | 
   grep MemTotal | 
   awk {'print $2'}`kB (Total)

Answer 1

Not exactly what do you ask for but also worth to consider:

free -h
free -h --mega

Answer 2

grep MemFree /proc/meminfo

output: MemFree: 15932276 kB

echo $(expr $(awk '/MemFree/{ print $2 }' /proc/meminfo) / 1)

output: 15932268

echo $(expr $(awk '/MemFree/{ print $2 }' /proc/meminfo) / 1024) Mb

output: 15558 Mb

echo $(expr $(awk '/MemFree/{ print $2 }' /proc/meminfo) / 1024 / 1024) Gb

output: 15 Gb

• see man expr
• Also you used backquotes around a statement. It better to use $(...) (The best reason is that it will not interfere with stackoverflow formatting ?)