Editing Files With
vi (Extra Credit)#
In this lab you will use the vi editor to create new files and edit existing files.
Log on to
opus so that you have a command line shell at your service. Change directory to
edits to start this lab.
Create a text file called
viand insert the following lines:
cd clear echo This is the home directory of $LOGNAME echo ======================================= ls -F
chmodcommand to set the permissions on the file, home to
Enter the command
homeand see what happens. Is it what you would expect?
Move this shell script you have just made to your
bindirectory, so that you may run it from anywhere on the system.
Congratulations: you have just written your first shell script!
Run the spell command on the file
Note all the misspelled words.
Make a permanent list of the above misspelled words by running the
spellcommand again, but this time, redirect the output to a file called
Use vi to edit the
correct all the misspelled words.
move the “Reprinted from …” line to the bottom.
get rid of duplicate lines, repeated words and extraneous characters in the file.
use a consistent indentation.
fix the typo on the line: “The biggest business on town …” (change to in)
fix the typo on the line: “The airport runaway…” (change to runway)
ddcommand to delete lines.
pcommands to copy and paste.
/stringcommand to search for misspelled words.
xcommand to delete single characters.
icommand to do normal notepad-like screen editing, and
Escto get back to command mode.
use two login terminal sessions, one to edit
small_town, the other for
When you have fixed all the spelling errors, run the
Edit the file
wordsand remove all the misspelled words that you have corrected. (Only Ayshire and moshpit should remain in the file.)
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
echocommand, and change the word men to women. Then re-execute the command. Hint: to enter command line editing mode, press the up-arrow key.
Re-execute the command once more, but this time redirect the output to a file called
women. You should now have a file named
womenwith a single line in it.
To get credit for this lab, you must send me all the files that you have created or edited in this lab.
Bundle (concatenate) the files below into a single text file in your home directory named
editing.txtfile to the
/home/mmatera/turnindirectory 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.