hostnamectl
only display on screen
for u in user{1..5} ; do
> echo $u
> done
actually create them in system
for u in user{1..5} ; do sudo useradd $u; echo "Password1" | sudo passwd --stdin $u; done
to delete the above created users
for u in user{1..5} ; do sudo userdel -r $u;done
history
history 5
file commands
============
touch CloudComputing
ll
full details
ls
only filenames
touch devops aws azure gcp
ll
ls
ll follow alphabetic order
touch aws{1..7}
touch aws{1.3} creates only one file as its single .
touch filename
touch f1 f2 f3
touch filename{1..10}
all files in linux will be created in text format
to delete files
rm file1
y
ls
rm f1 f2 f3
y y y
clear
ctrl+l also clears the screen
