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문자열 찾기 : find . -type f -name *.conf -exec grep “찾을문자열” {} \; -print
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문자열 변경: <span style="background-color: rgb(208, 255, 157);">find / -name “*.txt” -exec perl -pi -e ‘s/찾을문자열/바꿀문자열/g’ {} \;</span>
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