Linux Commands

Ubuntu

Command	Usage
uname -a	Display system information
neofetch	See image.
sudo lshw	All your hardware info
lscpu	Info about CPU architecture
df	Disk Usage info
`diff -q <directory-1> <directory-2>	Difference between two directories
sudo useradd -m -d /opt/tomcat -U -s /bin/false tomcat	Add user called tomcat /bin/false ensures that one can't login using tomcat
vi /etc/passwd	Check out this file to see a list of all users
wget
lvextend	Extend size of a logical volume in a Linux system
lvextend -l 100%FREE /dev/mapper/volumegroup-logicalvolume	Extend size of the given logical volume using all the remaining free space
resize2fs	The resize2fs command is used to resize the file system on a Linux block device, such as a partition, after the underlying block device's size has been changed. Usage : resize2fs <device>

neofetch output