topic Re: Joining Text Files in Operating System - HP-UX

Joining Text Files

David Robertson_1 — Wed, 25 Oct 2000 06:20:36 GMT

How do I join text files with NO newline between them.
I've tried using 'cat file1 file2 file3' but this adds newlines.

Dave Robertson

Re: Joining Text Files

Andreas Voss — Wed, 25 Oct 2000 06:33:44 GMT

Hi,

this might be not the best solution but it works:

echo $(cat file1)$(cat file2) > file

OR if not ksh/posix-sh

echo `cat file1``cat file2` > file

Regards

Re: Joining Text Files

Lasse Knudsen — Wed, 25 Oct 2000 06:33:58 GMT

Hi there,

'cat' does not add newlines - my guess is that your NLs are already in the files.

Re: Joining Text Files

Ralph Grothe — Wed, 25 Oct 2000 07:47:33 GMT

I have the sneaking suspicion that the presented solution might fail on utterly large files, based on what echo presumably can swallow.
If I were sure about the redundant n in the last line of each file I'd simply send it through the stream editor (awk, perl, or whatever), like this
$ sed '$d' file1 file2 ... fileN > fileCatted
If unsure about the trailing n better use a regex to filter.
TIMTOWTDI as they would say in Perl-lingo.
But my feeling may be totally errant because I'm relatively new to Unix.

Re: Joining Text Files

Ralph Grothe — Wed, 25 Oct 2000 07:50:22 GMT

Ooops, weren't aware of the disappearing of backslashes in the forum.
Of course, substitute \n for n

Re: Joining Text Files

Ralph Grothe — Wed, 25 Oct 2000 07:50:40 GMT

Ooops, weren't aware of the disappearing of backslashes in the forum.
Of course, substitute \n for n

Re: Joining Text Files

Ralph Grothe — Wed, 25 Oct 2000 07:51:16 GMT

Ooops, weren't aware of the disappearing of backslashes in the forum.
Of course, substitute \n for n

Re: Joining Text Files

Ralph Grothe — Wed, 25 Oct 2000 07:52:40 GMT

Ooops, weren't aware of the disappearing of backslashes in the forum.
Of course, substitute \n for n

Re: Joining Text Files

James R. Ferguson — Wed, 25 Oct 2000 08:14:15 GMT

David:

See man pages for 'join'. Is this what you seek?

...JRF...

Re: Joining Text Files

Ralph Grothe — Wed, 25 Oct 2000 08:27:59 GMT

I have to apologize for my silly postings.
First, the annoying repetitive last posting was due to a webserver failure.
Second, one should first try things before giving advice. ;-)
Third, I think I misunderstood the issue.
If it was for chopping the trailing \n of each line (what the echo from above is doing on my machine) then you could use this Perl oneliner (even the obsolete Perl 4 shipped with HP-UX should do the trick)

$ perl -ne 'chop;print' file1 file2 ... fileN

But of course, this is also easily done using sed or awk.