CommandLine.md

Command Line Interaction

Objectives

• Explain what the command line is.
• Explain why the command line is important.
• Use the command line to interact with your machines operating system.

What is the command line?

Turn to your neighbor and discuss what the command line is. Be prepared to share your comments with the class.

Why is the command line important?

Turn to your neighbor and discuss why the command line is important. Be prepared to share your comments with the class.

How do you use the command line to interact with the operating system.

Define each of the following:

• whoami
• Home directory
• Working directory
• pwd
• Relative path
• Absulote path
• ls
• Command flags
• man
• echo
• tree
• Root directory
• Parent directory
• cd
• Tab completion
• mkdir
• touch
• rm
• > vs >>
• cat
• less
• history
• sort
• Piping (|)
• curl
• grep
• mv
• cp
• rm -r
• Filename permissions

Practice with books!

• https://gist.githubusercontent.com/rogerwschmidt/8a1aba88b8f2ee0d032a181cabfddccb/raw/74c1090c41665cc19d20cf0a126261d1a97073bc/books.txt
• Use curl to download text from the link above and > to save it to a file called books.txt
• Practice using cat, |, grep and sort on books.txt