F1 Linux Services and Scheduling

What are some common problems associated with user login issues?

• Issues related to file attributes such as ownership and timestamps.

• Difficulties users face when trying to access files in the wrong context.

• Problems with forgotten passwords, weak password policies, or password expiration.

• Problems like username/password issues, authentication methods, or account lockouts due to multiple failed login attempts.

What is the primary purpose of the `systemctl` command in Linux?

• To create cron jobs

• To mask a service

• To interact with crontab files

• To manage system services

Which `systemctl` command is used to stop a running service?

• `systemctl restart `

• `systemctl disable `

• `systemctl stop `

• `systemctl status `

How is the restart command used with `systemctl` to restart a service?

• `systemctl restart `

• `systemctl stop `

• `systemctl enable `

What does the status command in `systemctl` provide information about?

• The cron syntax

• The intervals between cron jobs

• Whether a service is running or stopped

• The crontab commands

Which `systemctl` command is used to enable a service to start automatically at boot time?

• `systemctl start `

• `systemctl enable `

• `systemctl mask `

• `systemctl disable `

What does the mask command in `systemctl` do?

• Enables a service

• Disables a service

• Stops a service

• Prevents a service from running or starting

What is cron used for in Unix-like operating systems?

• Enabling and disabling services

• Scheduling recurring tasks at fixed times, dates, or intervals

• Managing system stability

• Interacting with crontab files

What does the `at` command do in Unix-like systems?

• Manages cron jobs

• Prevents services from running

• Schedules one-time job execution

• Enables and disables services

Explain how you would troubleshoot a service that fails to start using `systemctl`.

• Check the service status using `systemctl status ` and review logs for errors.

• Immediately restart the service using `systemctl restart `.

• Disable the service using `systemctl disable ` and try again.

• Mask the service using `systemctl mask ` to prevent it from starting.