How can I find out the total physical memory (RAM) of my linux box suitable to be parsed by a shell script?

Question

I\'m typing a shell script to find out the total physical memory in some RHEL linux boxes.

First of all I want to stress that I\'m interested in the total ph

Answer 1

These are the ways :

1. /proc/meminfo

MemTotal: 8152200 kB

MemFree: 760808 kB

You can write a code or script to parse it.

2. Use sysconf by using below macros

sysconf (_SC_PHYS_PAGES) * sysconf (_SC_PAGESIZE);

3. By using sysinfo system call

int sysinfo(struct sysinfo *info);

struct sysinfo { .

   .

   unsigned long totalram;  /*Total memory size to use */

   unsigned long freeram;   /* Available memory size*/

   .

   . 

  };