How to set csplit output filenames by pattern?

Question

Is there a way to set output names of csplit through the pattern? I want to split the ssh-config by hosts to corresponding files.

If there is a solution without csplit I'm happy as well.

Answer 1

No, csplit can only use integer numbering in output file names. If you want to base the output file on the content, use another tool, for example awk or perl.

awk '
    BEGIN {out="_"}
    $1 == "Host" {if ($2 ~ /\//) exit(1); out=$2}
    {print >out}'

Note that this code only performs rudimentary error checking (I did at least make sure that it would only write in the current directory). Don't run it on an untrusted file.