Check Centos Version

cat /etc/centos-release
CentOS Linux release 7.4.1708 (Core)

Check OS Architecture (32  bit / 64 bit)

uname -a
Linux Postgre-LMS 3.10.0-693.5.2.el7.x86_64 #1 SMP Fri Oct 20 20:32:50 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

x86_64 : It indicates its 64 bit architecture

Check Ubuntu Version

lsb_release -a

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.3 LTS
Release: 16.04
Codename: xenial

EXTRACT TIME WITH DATE FROM DATE

$ date
Tue Dec 12 14:56:00 IST 2017

$ date +%H%M%S_%d\%m\%Y
145416_12122017

CHECK DIRECTORY SIZE

du -h <location>

 du -h /Sachin/
18M /Sachin/initial_backup_setup
12K /Sachin/backup_scripts
117M /Sachin/backup/archived
649M /Sachin/backup/sql
766M /Sachin/backup
793M /Sachin/