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[FILE]...-næ-numberï¼æ1å¼å§å¯¹ææè¾åºçè¡æ°ç¼å·ï¼ -bæânumber-nonblankï¼å-nç¸ä¼¼ï¼åªä¸è¿å¯¹äºç©ºç½è¡ä¸ç¼å·ï¼ -sæâsqueeze-blankï¼å½éå°æè¿ç»ä¸¤è¡ä»¥ä¸ç空ç½è¡ï¼å°±ä»£æ¢ä¸ºä¸è¡ç空ç½è¡ï¼ -Aï¼æ¾ç¤ºä¸å¯æå°å符ï¼è¡å°¾æ¾ç¤ºâ$âï¼ -eï¼çä»·äº"-vE"éé¡¹ï¼ -tï¼çä»·äº"-vT"éé¡¹ï¼ [[email protected] a]# touch f1 f2 [[email protected] a]# echo "hello" > f1 [[email protected] a]# echo "world" > f2 [[email protected] a]# cat f1 hello [[email protected] a]# cat f1 f2 #åæ¶æ¾ç¤ºæ件flåf2çå 容 hello world [[email protected] a]# cat f1 f2 > f3 #å°æ件flåf2å并åæ¾å ¥æ件f3ä¸ [[email protected] a]# cat f3 hello world ä¸è¡å½ä»¤å®ç°ä»£ç è¡æ°ç»è®¡ 1. åºæ¬ç # find . -name "*.cpp"|xargs wc -l|grep "total"|awk '{print $1}' # find . -name "*.cpp"|xargs cat|wc -l 2. å»ç©ºè¡ç # find . -name "*.java"|xargs cat|grep -v ^$|wc -l ä¸é¢ç^$æ¯æ£å表达å¼ï¼^æ¯ä»¥å¹é å¼å¤´ï¼$æ¯å¹é ç»å°¾ï¼æ以^$æ¯å¹é ä¸ä¸ªç©ºè¡ã 3. å»æ³¨éç # find . -name "*.java"|xargs cat|grep -v -e ^$ -e ^\s*\/\/.*$|wc -l ä¸é¢ç^\s*\/\/.*$æ¯æ£å表达å¼ï¼å ¶ä¸^\s*表æä»¥ç©ºæ ¼(å¤ä¸ª)å¼å¤´ï¼\/\/表ææ¯//å¼å¤´ç注éï¼â.*$â表æå¯è½ä»¥â.âç»å°¾ å»æ³¨éçåªæ¯å»æ以//å¼å¤´ç注éï¼å¯¹äºä»¥/* */å å«ç注é并没æå»æã ä¸é¢æ¯åªè¯å«.cppæ件ï¼å¦ææ³ä¸æ¬¡ç»è®¡å¤ç§ç±»åçæ件ï¼æä¹åå¢ï¼ 4. ç»è®¡æ¬æ件夹ä¸.hï¼.cppï¼.shä¸ç§ç±»åçæ件代ç è¡æ° æ¹å¼ä¸ï¼ # find -name "*[.h|.cpp|.sh]" -type f | xargs cat | wc -l æ¹å¼äºï¼ # find -name "*[.h|.cpp|.sh]" -type f -exec cat {} \; | wc -l æ¹å¼ä¸ï¼ # find -regex ".*\.h\|.*\.cpp\|.*\.sh" | xargs cat |wc -l å ¶å®ä¸é¢ä¸ç§æ¹æ³çåºå«å°±æ¯findå°ææçç®æ æ件çæ¹æ³ï¼è¿æä¸é¢ä¸¤ç§æ¹æ³å¯ä»¥æ¾å°æ³è¦çç»æã æ¹æ³åï¼ # find -name "*[.h|.cpp|.sh]" ! -name "." ä¸é¢!å·ååé¨åæ¾åºä¼å å«"."è¿ä¸ªç®å½ï¼ç¨"!"æé¤è¿ä¸ªç®å½ï¼å½ç¶äºï¼è¿ä¸ªåä¸é¢æ¹å¼ä¸ï¼äºä¸ç-type fæ¯ç¸è¿ä¼¼çæ¹æ³ï¼-type fæ¯æå®ç®æ ç±»å为æ件ã æ¹æ³äºï¼æ笨çæ¹æ³ï¼ # find -name "*.h" -o -name "*.sh" -o -name "*.cpp" æ¤å¤ï¼å¦æå½åç®å½ä¸å å«åç®å½ï¼åä¸å¹¶ä¼è¢«findåºæ¥ï¼å¦æä¸æ³findåç®å½ï¼åå¯ä»¥ç¨-maxdepthéé¡¹ï¼ # find -maxdepth 1 -name "*[.h|.cpp|.sh]" -type f |
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