Introductory Command Line And Bash Scripting

You have made changes to .bashrc, how do you initiate the changes in the current shell?

• run ~/.bashrc

• source ~/.bashrc

• exec ~/.bashrc

• ./bashrc

You are currently in your home directory, display the files and directories located in the etc directory by date modified where you can see the date

• ls /etc -t

• ls -ltr

• ls -lt /etc

• ls -ltr ~/etc

You are using in a GUI for Ububtu desktop, how do you open a terminal?

• Ctrl-Alt-t

• Ctrl-Shift-b

• Ctrl-Alt-b

• Ctrl-Shift-t

What command creates an empty file?

• mk

• cat

• create

• touch

Which one of the following would be best (will return the fewest results) at returning unique results from a file named colors.txt containing the following with each word on it's own line and writing the results to a file called sorted:

green,Green,Blue,Red,Yellow,Purple,red,Purple,green

• sort colors.txt | uniq -i | sorted

• sort colors.txt | uniq -i > sorted

• uniq -i colors.txt >> sorted

• sort uniq colors.txt = sorted

How would you delete a non empty directory named Data located in the directory you are in?

• rm Data

• rmdir Data

• rm -r Data

• rm -r ../Data

Add the line "Ryan" to the file enemies without removing any other data without using a text editor

• echo "Ryan" >> enemies

• echo "Ryan" > enemies

• echo "Ryan" < enemies

• cp "Ryan" enemies

Replace all instances of C with A in the file Schou_SFS_FinalGrades.csv permanently

• sed 's/C/A/g' Schou_SFS_FinalGrades.csv > Schou_SFS_FinalGrades.csv

• sed -i 's/C/A/g' Schou_SFS_FinalGrades.csv

• sed 's/C/A/g' Schou_SFS_FinalGrades.csv

• sed -i 's/C/A/' Schou_SFS_FinalGrades.csv

Which of the following returns the number of lines, and only the number of lines, in the file WarAndPeace.txt

• wc -l warandpeace.txt

• wc -c warandpeace.txt

• WarAndPeace.txt | wc -lc

• wc -l WarAndPeace.txt

You have realized that Vim is superior to Emacs and want to rid your computer of anything having to do with the lesser editor, which command best accomplishes this

• apt-get remove emacs

• sudo apt-get remove emacs

• sudo apt-get purge emacs

• sudo apt-get autoremove emacs