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    There's no reason why you can't do it with sed. I think you've misinterpeted @Kusalananda's answer (there is no > before the END_SED, it's the end of a heredoc, not a redirection). For simple things like this, awk vs sed is often a matter of personal preference. I like the verbose readability and procedural style of awk. It's easier to read and understand months later. Other times, whether I use sed or awk (or perl) depends on which one i happen to think of first, or which one seems more fitting for the job. Commented Jun 17, 2016 at 14:05
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    also, it would be trivially easy to modify either of the above scripts to search for any stanza, just add -v search=dvorak-intl to the command line (before any filenames) when running the script, change the /"dvorak"/ {dvorak++}; line to match($0,"\""search"\"") {found++}; and change all other occurences of the dvorak variable to found. Commented Jun 17, 2016 at 14:13
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    i wouldn't use this script to insert a line. its job is to find a line number. I'd put that line number into a variable (e.g. $l), and do something like printf "%s\n" "${l}i" 'level3(ralt_switch' w | ed filename Commented Jun 17, 2016 at 14:20
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    One final comment. change both print NR lines to print NR": "$0; to print the matching lines as well as the line numbers. Commented Jun 17, 2016 at 14:33
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    for info about editing files in-place with printf and ed: unix.stackexchange.com/questions/287593/… or unix.stackexchange.com/questions/281492/… BTW I forgot the . before the w in my comment above. my mistake, it's required to terminate the insert. Commented Jun 17, 2016 at 14:40