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Linux command to check number of processor core , memory ram size, disk usage disk size



To get the number of processor
====================

less /proc/cpuinfo | grep processor

To get the details of each processor and number of core
=======================
# very detailed information
less /proc/cpuinfo | less

# summary information how many core/processor etc

lscpu

To get the RAM size
=============

1. In human readable format

free -g
free -m

2. In more details

less /proc/meminfo 


To get the disk size
=============

1. In human readable format

df -h

Total size of a folder
===============
Enter into folder and then
du -ch | grep total




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