Basic vi knowledge may not be needed if you only work in Linux, but in my job I can work on Linux, AIX, Solaris, and HP-UX, and vi is the only editor that you c

Basic vi knowledge may not be needed if you only work in Linux, but in my job I can work on Linux, AIX, Solaris, and HP-UX, and vi is the only editor that you can find on all of them in their base installs.