# Basic commands to Navigate and manage directories

pwd                   # Print current directory
ls                    # List contents of the directory
mkdir devops_test     # Create new directory
cd devops_test        # Change to that directory
touch testfile.txt    # Create a test file
rm testfile.txt       # Delete the test file
cd ..                 # Go back one directory (can also do cd ../../ and etc)
rm -r devops_test     # Delete the directory

# Create a new group
sudo groupadd devopsteam

# Create users and assign them to the group
sudo useradd -m -G devopsteam user1
sudo useradd -m -G devopsteam user2

# Verify group membership
groups user1
groups user2

# Create a directory and a file
mkdir /tmp/secure_folder
touch /tmp/secure_folder/groupfile.txt

# Change ownership to a user and group
sudo chown user1:devopsteam /tmp/secure_folder/groupfile.txt

# Change permissions to allow group read/write
sudo chmod 660 /tmp/secure_folder/groupfile.txt

# Verify permissions
ls -l /tmp/secure_folder/groupfile.txt