Click here to navigate the course.

Drag the edges to resize the window.

In Projects, you can keep track of your progress as you go throught the tasks. Check each item as you complete it!

$ grep Mount mountains.txt

grep stands for "global regular expression print". It searches files for lines that match a pattern and returns the results. It is also case sensitive. Here, grep searches for "Mount" in mountains.txt.

$ grep -i Mount mountains.txt

grep -i enables the command to be case insensitive. Here, grep searches for capital or lowercase strings that match Mount in mountains.txt.

The above commands are a great way to get started with grep. If you are familiar with regular expressions, you can use regular expressions to search for patterns in files.

Report a Bug
If you see a bug or any other issue with this page, please report it here.