Question: How to login as super admin?
Once you login in console, the root account is not active by default.
To be active as super admin, you need to execute following commands.
sudo -su root
Question: How to change the permission of folder?
chmod 755 folder
Question: How to change the permission of multiple folder?
chmod 755 foldername1 foldername2 foldername2
Question: How to change the permission of folder in Recursive?
chmod -R 755 folder
Question: How to change the ownership of folder?
sudo chown user:group foldername
Question: How to change the ownership of multiple folder?
sudo chown user:group foldername1 foldername2 foldername2
Question: How to change the ownership of folder in Recursive?
sudo chown -R user:group foldername
Question: How to change the folder permission only not files?
find . -type d -exec chmod 751 {} \;
Question: How to change the folder permission only in Recursive not files?
find . -type d -exec chmod -R 751 {} \;
Question: Who is login is ssh?
whoami
Question: How to change the password of user?
passwd username(Now it will prompt for new password and re-enter password)
Question: Give example of understanding from 0-7?
| Number | Read (R) | Write (W) | Execute (X) |
|---|---|---|---|
| 0 | No | No | No |
| 1 | No | No | Yes |
| 2 | No | Yes | No |
| 3 | No | Yes | Yes |
| 4 | Yes | No | No |
| 5 | Yes | No | Yes |
| 6 | Yes | Yes | No |
| 7 | Yes | Yes | Yes |
