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$ cat file1
head1
head2
head3
head4
$ cat file2
tail1
tail2
tail3
tail4
$ sed '1i\' <(sed -n 1,2p file1) file2
sed: couldn't write -1 items to stdout: Success
$...

Thank you bakunin for your comprehensive post. I will explore this option and hopefully create a cleaner solution

---------- Post updated at 12:37 PM ---------- Previous update was at 12:30 PM...

Hi hergp,

I tried your solution but strangly it inserts the txt "/dev/fd/63" into my file instead of the header record. If I extract the sed command in the () it outputs correctly. Not sure...

Hi All,

I'm relatively new to Unix scripting and am trying to get my head around piping.

I'm trying to take a header record from one file and prepend it to another file. I've done this by...