#1. Get Detailed Information related to Linux System
uname uname -s uname -v uname -m uname -a
#2. Information Related to File System
du
df -h
free -m
free -mt
cat/proc/meminfo
fdisk -l
#3. CPU Information of Linux System
cat/proc/cpuinfo
lscpu
#4. Hostname of the Server
hostname
uname -n
#6. Information of Block Devices
lsblk lsblk -aThat's It !
To get more details about the mentioned commands check out the blog.