Open another file while others are already open
Say you have some files in the current directory: file1.txt, file2.txt, file3.txt
You've already opened the first file with vi and you want to open the other two at the same time. Just do the following while inside vi.
:e file2.txt
That will bring the second file into the buffer. Just execute :e file3.txt and now you will have all 3 files opened without ever closing vi.
To switch between the three files, enter the following command where # is an integer. 1 for file1.txt, 2 for file2.txt and 3 for file3.txt
:b#
I believe if you actually type :b# it will go to the next or previous file. I'm not sure.
It's sort of like having virtual tabs inside of vi.
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