Concatenate two files without adding a newline

catnewlinestext processing

If I nano two files, one of which reads 'this' without me entering a newline, and one of which reads 'is' without me entering a newline, I want to be able to then cat the two files together into something like 'thisis'.

Instead, the newlines are inserted automatically.

alec@ROOROO:~/$ cat test1 test2 > test3
alec@ROOROO:~/$ cat test3
this
is

So, how can I concatenate two files without adding a newline?

Best Answer

Those trailing newlines are added by nano, not by cat.

Use nano's -L parameter:

-L (--nonewlines)
    Don't add newlines to the ends of files.

Or ~/.nanorc's nonewlines command:

set/unset nonewlines
    Don't add newlines to the ends of files.

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Sed Newlines – Fix Sed Failing to Remove Newline Character

sed delimits on \newlines - they are always removed on input and reinserted on output. There is never a \newline character in a sed pattern space which did not occur as a result of an edit you have made. Note: with the exception of GNU sed's -z mode...

Just use tr:

echo ls | tr -d \\n | xclip -selection clipboard

Or, better yet, forget sed altogether:

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Bash – How to Force Newlines with Cat Wildcard Printing

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endlcat() {
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  done
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then you can use endlcat *.

The for loop loops over all provided arguments ($@) which are already escaped by the shell when you use wildcards like *. The -- is required to not choke on file names starting with a dash. Finally the echo outputs a newline.

Best Answer

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Sed Newlines – Fix Sed Failing to Remove Newline Character

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