ls -F
The -F option is to display a slash after each working directory and an asterix after each executable file
to create a directory under a directory in one command
mkdir -p
for example
mkdir -p sourav/sourav2/sourav3
cd when using without arguement takes you to the home of current working directory
for example
pwd
/home/sourav
mkdir sourav3
cd sourav3
pwd
/home/sourav/sourav3
cd
pwd
/home/sourav
copy a file using relative pathname
pwd
/home/sourav
mkdir -p sourav3/sourav4
cd sourav3
cat > sourav1.txt
Hello how are you
ctrl+z
cp sourav1.txt ..
ls ..
sourav1.txt will be shown in the home direc
cd ~
cat > sourav2.txt
Hello how are you
ctrl+z
cp sourav2.txt sourav3/sourav4
ls sourav3/sourav4
sourav2.txt will be shown
cp sourav2.txt
to add a new user
$ sudo useradd username -m -s /bin/bash
$ sudo passwd username
to login as a different user in terminal
sudo -i -u
