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

codeaft@codeaft:~$ pwd
/home/codeaft

codeaft@codeaft:~$ mkdir Linux
codeaft@codeaft:~$ cd Linux/

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

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

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

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

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

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

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

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

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

codeaft@codeaft:~/Linux/Flavours$ ls
Fedora LinuxMint Ubuntu

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

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