This might be a small one!
I have a two lines in a text file like below:
S<Switch_ID>_F<File type>
_ID<ID number>_T<date+time>_O<Original File name>.DAT
I want to append the two lines in vi like below
S<Switch_ID>_F<File type>_ID<ID number>_T<date+time>_O<Original File name>.DAT
What happened here is that the second line got deleted and and the contents of second line are appended to the first line.
How could I do it using in command mode in vi?
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.
press Shift-4 ("$") on the first line, then Shift-j("J"). And if you want help, go into vi, then press F1
Just replace the "\n" with ""
in VI, VIM for every line in document
%s/>\n_/>_/g
if you want to confirm every replacment
%s/>\n_/>_/gc
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
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 info.