Editing Files With vi (Extra Credit)#

In this lab you will use the vi editor to create new files and edit existing files.

Procedure#

Log on to opus so that you have a command line shell at your service. Change directory to edits to start this lab.

  1. Create a text file called home using vi and insert the following lines:

    cd
clear
echo This is the home directory of $LOGNAME
echo =======================================
ls -F

  2. Use the chmod command to set the permissions on the file, home to rwxr-xr-x.

  3. Enter the command home and see what happens. Is it what you would expect?

  4. Move this shell script you have just made to your bin directory, so that you may run it from anywhere on the system.

    Congratulations: you have just written your first shell script!

  5. Run the spell command on the file small_town:

    spell small_town

    Note all the misspelled words.

  6. Make a permanent list of the above misspelled words by running the spell command again, but this time, redirect the output to a file called words.

  7. Use vi to edit the small_town file and:

    1. correct all the misspelled words.

    2. move the “Reprinted from …” line to the bottom.

    3. get rid of duplicate lines, repeated words and extraneous characters in the file.

    4. use a consistent indentation.

    5. fix the typo on the line: “The biggest business on town …” (change to in)

    6. fix the typo on the line: “The airport runaway…” (change to runway)


    Tips:

    • use the dd command to delete lines.

    • use yy and p commands to copy and paste.

    • use /string command to search for misspelled words.

    • use x command to delete single characters.

    • use i command to do normal notepad-like screen editing, and Esc to get back to command mode.

    • use two login terminal sessions, one to edit small_town, the other for words.

  8. When you have fixed all the spelling errors, run the spell command again.

  9. Edit the file words and remove all the misspelled words that you have corrected. (Only Ayshire and moshpit should remain in the file.)

  10. Enter the following three commands from your shell prompt:

    date
echo Now is the time for all good men to come to the aid of their party
cal

    Use command line editing to redisplay the echo command, and change the word men to women. Then re-execute the command. Hint: to enter command line editing mode, press the up-arrow key.

  11. Re-execute the command once more, but this time redirect the output to a file called women. You should now have a file named women with a single line in it.

Submittal#

To get credit for this lab, you must send me all the files that you have created or edited in this lab.

  1. Bundle (concatenate) the files below into a single text file in your home directory named editing.txt:

    1. home

    2. words

    3. small_town

    4. women

  2. Copy your editing.txt file to the /home/mmatera/turnin directory renaming it as editing.txt.$LOGNAME. This can be done in a single command.

You can submit as many times as you like up to the deadline.