如何将文件的section转到列

cfwyy

1. awk '/\[.+\]/{seg = $0;while(getline N){if(N !~/\[.+\]/)print seg,N;else seg=N;}}' 1.txt

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moperyblue

1. sed -r '/\[.*]/{h;d};/\S/{G;s/(.*)\n(.*)/\2 \1/}' a.txt

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moperyblue

[code][/code]

moperyblue

1. 
   

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legs

perl -lnE'/\[.*\]/?$t=$&:say$_="$t $_"' file

a5love3n

awk '/.*\]$/{a=$0;next}{print a" "$0;next}' a.txt