WEEK 2 Linux Hands-On

Task 1 : User & Group Management

To create a user use command —> sudo useradd <user_name>

To create a group use command —> sudo groupadd <group_name>

To add user in a group use command —> sudo usermod -aG <group_name> <user_name>

• Set a password and grant sudo access.

• 

  Restrict SSH login for certain users in /etc/ssh/sshd_config.

• 

• Task 2 : File & Directory Permissions

• 

  permission

• 

  Task 3 : Log File Analysis with AWK, Grep & Sed

  

  Use grep to find all occurrences of the word "error".

  

  • Use awk to extract timestamps and log levels.

• Use sed to replace all IP addresses with [REDACTED] for security.

• 

  Task 4 : Volume Management & Disk Usage

  Create a directory /mnt/devops_data

• 

  

  Verify using df -h and mount | grep devops_data

• 

  Task 5: Automate Backups with Shell Scripting

  To create a shell script to back up /devops_workspace as backup_$(date +%F).tar.gz.

  

  Save it in /backups and schedule it using cron

•