Get system data

This article will contain commands that help to find information about different aspects of a Linux based system. Get the available disk space:

df -h

Get the size of directory:

du -sh

Search for unsuccessful SSH authentications:

egrep -i fail /var/log/auth.log

Get the distribution info:

lsb_release -a

Get the kernel info:

uname -a

Get the remote IP address. Replace REMOTE_URL with http://ipecho.net/plain

wget -qO- REMOTE_URL ; echo

Get info on RAM cards. Speed, size and so on...

sudo dmidecode --type 17

Get RAM info:

free -mh