kodingwindow@kw:~$ ls
a.out  kw.cpp   kw.py    Documents  Music     Public     Videos
kw.c   KW.java  Desktop  Downloads  Pictures  Templates  Weekdays

kodingwindow@kw:~$ pwd
/home/kodingwindow

kodingwindow@kw:~$ mkdir Linux
kodingwindow@kw:~$ cd Linux/

kodingwindow@kw:~/Linux$ pwd
/home/kodingwindow/Linux
kodingwindow@kw:~/Linux$ ls
kodingwindow@kw:~/Linux$ mkdir -p Flavours/{Ubuntu/{Ubuntu_18.04,Ubuntu_20.04},Fedora/{Fedora_31,Fedora_32}}
kodingwindow@kw:~/Linux$ ls
Flavours

kodingwindow@kw:~/Linux$ cd Flavours/Ubuntu/
kodingwindow@kw:~/Linux/Flavours/Ubuntu$ ls
Ubuntu_18.04  Ubuntu_20.04

kodingwindow@kw:~/Linux/Flavours/Ubuntu$ cd ..
kodingwindow@kw:~/Linux/Flavours$ ls
Fedora  Ubuntu

kodingwindow@kw:~/Linux/Flavours$ mkdir -m a=r KaliLinux
kodingwindow@kw:~/Linux/Flavours$ ls
Fedora  KaliLinux  Ubuntu

kodingwindow@kw:~/Linux/Flavours$ ls -l
total 12
drwxrwxr-x 4 kodingwindow kodingwindow 4096 Jun 13 12:03 Fedora
dr--r--r-- 2 kodingwindow kodingwindow 4096 Jun 13 12:04 KaliLinux
drwxrwxr-x 4 kodingwindow kodingwindow 4096 Jun 13 12:03 Ubuntu

kodingwindow@kw:~/Linux/Flavours$ mkdir -v CentOS LinuxMint
mkdir: created directory 'CentOS'
mkdir: created directory 'LinuxMint'

kodingwindow@kw:~/Linux/Flavours$ ls
CentOS  Fedora  KaliLinux  LinuxMint  Ubuntu

kodingwindow@kw:~/Linux/Flavours$ rmdir CentOS/
kodingwindow@kw:~/Linux/Flavours$ ls
Fedora  KaliLinux  LinuxMint  Ubuntu

kodingwindow@kw:~/Linux/Flavours$ rm -r KaliLinux/
rm: remove write-protected directory 'KaliLinux/'? y

kodingwindow@kw:~/Linux/Flavours$ ls
Fedora LinuxMint Ubuntu

kodingwindow@kw:~/Linux/Flavours$ cd
kodingwindow@kw:~$ ls
a.out  kw.cpp   kw.py    Documents  Linux  Pictures  Templates  Weekdays
kw.c   KW.java  Desktop  Downloads  Music  Public    Videos

kodingwindow@kw:~$ rm -rf Linux/
kodingwindow@kw:~$ ls
a.out  kw.cpp   kw.py    Documents  Music     Public     Videos
kw.c   KW.java  Desktop  Downloads  Pictures  Templates  Weekdays
kodingwindow@kw:~$