SYS: Create and edit text files.

Note: This is an RHCSA 7 exam objective.

Presentation

Vi is not the easiest text editor available in the Linux environment but it’s got two major advantages:

• it is always available,
• it doesn’t need a graphical interface.

Additional Resources

Free resources on the subject don’t lack on the Internet. This resource about Vi provides a good start.
In addition, TheUrbanPenguin provides a good introduction to Vi (15min) and Vim (8min).

Even though you think Vi is from another century, it will save your life more than once.