https://stackoverflow.com/questions/15758814/turning-multiple-lines-into-one-line-with-comma-separated-perl-sed-awk file aaa bbb ccc ddd xargs cat file | xargs result aaa bbb ccc ddd xargs improoved cat file | xargs | sed -e ‘s/ /,/g’ result aaa,bbb,ccc,ddd 변태 같은 명령어라고 표현해야 하나..
[태그:] sed
SED로 같은 행에 단어 추가
https://stackoverflow.com/questions/35252285/insert-text-with-sed-on-the-same-line-that-pattern-search sed로 정규 표현을 찾아, 같은 라인의 마지막에 삽입하는 명령. sed ‘s/\blocalhost\b/& 192.168.25.50/’ file \b: a zero-width word boundary &: refer to that portion of the pattern space which matched 이걸 모르면 ( )와 \1로 개 지랄을 해야 되는데..