Dear friends,

In VI, I have these data shown below:

Line1
Line2
Line3
Line4

How can I JOIN these line to the first line? When I finished I should have:

Line1 Line2 Line3 Line4

is there a text length limit of how long a single line can be in VI?

Thank you much!

You want to do this in vi right? Get to command mode in vi. Go to the line which should have the next line appended to it and then press shift-j (upper case j or J). This will append the next line at the end of the line that you currently are on.

eg. Your example will work as:

Line1[shift-j]     Line1 Line2[shift-j]     Line1 Line2 Line3
Line2          ->  Line3                  -> Line4                and so on... 
Line3               Line4 
Line4

Is there a limit in the number of lines to be joined or limit of number of character in a single line?

Is there a short program that someone can help?

Many thanks!

I did give you a reply. You haven't said whether that was any help or not. Also, you are violating the rules. In particular rule 4:
(4) Do not 'bump up' questions if they are not answered promptly. No duplicate or cross-posting and do not report a post where your goal is to get an answer more quickly.

Sorry! I did not mean to violate any rule!
Your post was helped! I am trying but each in my file are too long!

Thanks!

You can do the whole file using...

paste -d ' ' -s file1 > file2