50 Step Unix Commands

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50-Step Unix
For each question, find the correct unix command that will get the exact results
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Get the manual for ls
Search the manual page names and descriptions for anything containing git
What happens when you type l followed by TAB TAB
Print the name of the current working directory
After you execute ls -al .bash_profile, what is the shortcut to repeat the same command
After you execute ls -al .bash_profile, how do you execute a modified version editing the
line
7. Machine name (something like csslab1.uwb.edu)
8. Command to get the IP address
9. Find the IP address (or addresses) for google.com
10. The Operating System
11. Number of processes that are currently running on the machine
12. The process that is using the largest percentage of memory
13. The process that is using the least amount of CPU
14. The list of processes without the header line (start from 2nd line)
15. Keyboard input to stop running the command python -c ‘while True: 1*1’
16. Run python -c ‘while True: 1*1’ in the background. Find all running processes that have the
word python in them
17. Find all running processes that have the word python AND while in them
18. Find and terminate the process that has the word python AND while in it
19. Your username
20. What groups do you belong to
21. What shell are you using
22. Create an empty file named funny
23. Print a long listing of the file funny, so you can see its permissions
24. Make funny to be read-write-executable by you, read-executable by group and readable by
everybody
25. Add the command ls -al / as the first line of funny (without using an editor)
26. Execute funny
27. Add the command sleep 10 as the second line of funny (without using an editor)
28. Copy funny to not-so-funny AND preserve its permissions
29. Make not-so-funny to be executable by everybody, but not readable or writeable by
everybody (user and group permissions should stay the same)
30. Make not-so-funny to be executable by user, group and everybody, but no read or write
permissions to user group or everybody, and then delete not-so-funny without getting a
confirmation prompt
31. Use scp to copy funny to /tmp in csslab9.uwb.edu machine with the new name funnyXXX where XXX is your username
32. List all files in /tmp in csslab9.uwb.edu, using ssh but without logging in to csslab9. The
default shell, usually bash, should not be executed, but of course you have to make a
connection to the machine and execute ls on that machine.
33. Execute /tmp/funny-XXX on csslab9.uwb.edu, use ssh but do not login to csslab9, XXX is
your username
34. Count how many files there are in /usr/bin that has the word zip in them
35. List all files in /usr/bin that has the word yum in it using find
36. Make a directory called yummies
37. Copy all files in /usr/bin that has the word yum in it into the directory yummies
38. Create a zip file, my-yummies.zip, that includes the directory yummies
39. Create a compressed tar file, my-yummies.tar.gz, that includes the directory yummies
40. Append my-yummies.zip to big-file 3 times
41. Check the file size of big-file in a human readable format
42. You want to download the .nanorc file at
https://gist.github.com/jclosure/63820f48cb6551a43a0b272c3542389f The raw file URL is
https://gist.githubusercontent.com/jclosure/63820f48cb6551a43a0b272c3542389f/raw/093e
ff95fcfc6c3c547d9854ebb9a027bb285558/.nanorc Use wget do download it
43. Use git to clone https://github.com/pisan343/hello
44. Change into the directory hello and execute simplecompile.sh in that directory
45. Fix main.cpp and if necessary simplecompile.sh so you do not get any memory leak
warnings or style warnings. Use nano as your text editor
46. Print main.cpp on the standard output
47. Display main.cpp in the standard output waiting for a key at the end of each page and with
the ability to go back pages
48. Display the time it takes to execute sleep 1 in terms of total time elapsed and the time
consumed by system overhead
49. The full path for the executable for ls located:
50. (Not a unix command) Why is https://xkcd.com/149/ funny?