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In the two commands above, we passed two options to the paste command: -s and -d. The paste command can merge lines from multiple input files. By default, it merges lines in a way that entries in the first column belong to the first file, those in the second column are for the second file, and so on.
The vi editor has two modes: Command and Insert. When you first open a file with vi, you are in Command mode. Command mode means that you can use keyboard keys to navigate, delete, copy, paste, and do a number of other tasks—except entering text.
Manipulate multiple lines of textPlace your cursor anywhere on the first or last line of the text you want to manipulate. Press Shift+V to enter line mode. The words VISUAL LINE will appear at the bottom of the screen. Use navigation commands, such as the Arrow keys, to highlight multiple lines of text.
Shift+J removes the line change character from the current line, so by pressing "J" at any place in the line you can combine the current line and the next line in the way you want.
Vi or Vim?
Anyway, the following command works for Vim in 'nocompatible' mode. That is, I suppose, almost pure vi.
:join!
If you want to do it from normal command use
gJ
With 'gJ' you join lines as is -- without adding or removing whitespaces:
S<Switch_ID>_F<File type>
_ID<ID number>_T<date+time>_O<Original File name>.DAT
Result:
S<Switch_ID>_F<File type>_ID<ID number>_T<date+time>_O<Original File name>.DAT
With 'J' command you will have:
S<Switch_ID>_F<File type> _ID<ID number>_T<date+time>_O<Original File name>.DAT
Note space between type> and _ID.
This should do it:
J
In vi, J (that's Shift + J) or :join should do what you want, for the most part. Note that they adjust whitespace. In particular, you'll end up with a space between the two joined lines in many cases, and if the second line is indented that indentation will be removed prior to joining.
In Vim you can also use gJ (G, then Shift + J) or :join!. These will join lines without doing any whitespace adjustments.
In Vim, see :help J for more information.
Just replace the "\n" with "".
In vi/Vim for every line in the document:
%s/>\n_/>_/g
If you want to confirm every replacement:
%s/>\n_/>_/gc
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