Question

1. Run script to create a file named Ch7/hands-on7

2. Run the find command searching all directories beginning with root and search for a file named whereis. Send standard error to /dev/null and the standard output to Ch7/where. As soon as you submit the command, press Ctrl-z.

3. Note the number that appears on the screen [job id] that appears on the screen.

4. Type: jobs

5. Run the command: ls –lR / >system_list 2> /dev/null &

6. Type: jobs

7. Type: kill %[job id o f the ls c ommand]

8. Submit the same job you submitted in step 2 with the & following the command line. Change the standard output to Ch7/what

9. Type: jobs

10. Enter the foreground command, fg, followed by the job id of the job you suspended.

11. Send the job to the background by thing: bg %[job id]

12. Type: jobs

13. Bring all background jobs to the foreground and allow them to complete.

14. If you don’t have one, create a file users.sh that contains a command to list all users on the sy stem and save the output to Ch7/users. (hint: using vi, create users.sh with following command: awk –F’:’ ‘{print $1}’ /etc/passwd)

15. Use the at command to run the file in the background 1 minute from now.

16. Use the batch c ommand to execute the file in the background 2 minutes from now

Answer 1

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