Senario: You are using the latest ubuntu linux distro, You have been tasked with auditing the logs of the missionapp application. The application stores its logfile at /var/log/missionapp.log. To facilitate this, you are to write regular expressions to extract various lines from the application logfile, and write the extracted entries to currently empty files which have been created for you.

Task

1. Extract all lines from the file /var/log/missionapp.log that contain the string running at the very end of the line only, and write them to the file

/opt/answers/output_a.log

2. Extract all lines from the file /var/log/missionapp.log that contain the string WATCHDOG at the very start of the line only, and write them to the file /opt/answers/output_b.log

3. Extract all lines from the file /var/log/missionapp.log containing the exception string ExpiredPasswordException , followed somewhere on the line by the username Daniel , and write them to the file /opt/answers/output_c.log

NOTE: Do not sort or manipulate the output simply extract the matching lines.