Day12: Linux, Git & GitHub Cheat-Sheet
Basic File Permission commands
| Command | Description | |
ls -l | to show file type and access permission | |
r | read permission | |
w | write permission | |
x | execute permission | |
-= | no permission | |
Chown user | For changing the ownership of a file/directory | |
Chown user:group filename | change the user as well as group for a file or directory |
Environment Variables command
| Command | Description | |
echo $VARIABLE | To display value of a variable | |
env | Displays all environment variables | |
VARIABLE_NAME= variable_value | Create a new variable | |
Unset | Remove a variable | |
export Variable=value | To set value of an environment variable |
User management commands of linux
| Command | Description | |
sudo adduser username | To add a new user | |
sudo passwd -l 'username' | To change the password of a user | |
sudo userdel -r 'username' | To remove a newly created user | |
sudo usermod -a -G GROUPNAME USERNAME | To add a user to a group | |
sudo deluser USER GROUPNAME | To remove a user from a group | |
finger | Shows information of all the users logged in | |
finger username | Gives information of a particular user |
Networking command
| Command | Description | |
SSH username@ip-address or hostname | login into a remote Linux machine using SSH | |
Ping hostname="" or ="" | To ping and Analyzing network and host connections | |
dir | Display files in the current directory of a remote computer | |
cd "dirname" | change directory to “dirname” on a remote computer | |
put file | upload ‘file’ from local to remote computer | |
get file | Download ‘file’ from remote to local computer | |
quit | Logout |
Source: geeksforgeeks
