It's your
.+ at the beginning: it will always match the
largest possible thing it can. In this case, it can match all the way up to the Protocol section, so it does. Change it to
.+? and you'll be on the right track. The additional question mark tells the .+ to match the
smallest possible thing it can. However, now the capturing
(.+) will try to grab the largest possible match, so it will end up with "admin
] Protocol
[ Telnet".
I think the negated character class [^\]]+ would be a better choice (grab as many non-brackets as possible) to match everything inside the brackets without risk of flowing over into the next set of brackets.
s/.+?\[\s+([^\]]+)\s+\].+/$1/;
This works for me and results in 'admin'.
Also, as Mr. Muskrat demonstrates, this is not quite the right realm for a s///, you should probably be just using a match and capturing what you want.
blokhead
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