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<pre>GREP(1)





	grep , egrep , fgrep - ӡָļзضģʽ





	grep [-[AB] ] [-CEFGVabchiL1nqrsvwxyUu] [ -e ʽ | -f ļ] [ -d

 ִв] [ --directories=ִв] [--extended-regexp] [--fixed-strings] [--bas

ic-regexp] [--regexp=ʽ] [--file=ļ] [--ignore-case] [--word-regexp] 

[--line-regexp] [--no-messages] [--revert-match] [--version] [--help] [--byte-off

set] [--line-number] [--with-filename] [--no-filename] [--quiet] [--silent] [--te

xt] [--files-without-match] [--files-with-matches] [--count] [--before-context=

ʾ] [--after-context=ʾ] [--context] [--binary] [--unix-byte-offsets] [

--recursive] ļ ...





	grepڲָļûָļʱӱ׼ܵеõļǷ

ʽͬݣУڵС



	grepҪıԪֱѡ



	-G,--basic-regexp

		ʽΪĹʾʹãϸ£grepԤֵ



	-E,--extended-regexp

		ʽΪչĹʾʹãϸ£˲Чʹegrepָ



	

	-F,--fixed-stirngs

		ʽΪ̶ַбַհзָеһַ

ļƥ䡣

	

	⣬Ƶĳegrepfgrepɹʹáegrepgrep -Eȫ

ͬҺʹͳUnix egrepݡfgrepgrep -F



	grepĳ򶼿ʹµѡ

	-A ʾ, --after-context=ʾ

		ʾ뷶ʽƥУʾָ֮



	-B ʾ,--before-context=ʾ

		ʾ뷶ʽƥУʾ֮ǰָ



	-C ʾ,--context=ʾ

		ʾ뷶ʽƥУʾǰָıе



	-ʾ

		ʹ--context=ʾgrepὫָʾһϡ



	-V,--version

		ӡgrepİ汾Ϣ׼˰汾ӦеĴ󱨸У£



	-b,--byte-offset

		ÿǰӡļиеһַַλƫƱšַļе1

ַַΪ1ַļе100ַַıƱΪ100



	-c,--conut

		ֹͨӡļзϷʽƥеʹ-v,--revert-matc

hѡ£ӡвƥе



	-d ִв,--directories=ִв

		ָҪҵļһĿ¼ôʹACTIONgrepֹͣ

Ŀ¼ĲһԹãreadrecurse͡skipĬϵĲ

ǡreadĿ¼Ŀ¼Ϊһļַƥ䡣óɡ

skipʾԹĿ¼κδɡrecursegrepݹ鴦

Ŀ¼Ŀ¼еļƥ䣬ʹ-rѡЧͬ



	-e ʽ,--regexp=ʽ

		ַָΪļݵķʽѡЧֹԡ-Ϊ׵

ϵͳ



	-f ļ,--file=ļ

		ָļлʽÿһʽļΪգ൱û

ָκηʽҲͲκβѯ



	-h,--no-filename

		ļжƥʱʹôѡɽֹÿһзϷʽļ

֮ǰʾĸļϢ



	-i,--ignore-case

		ԷʽָҪҵļĴСд



	-L,--files-without-match

		ֹȡֻ֮ļݲָʽļơò

ֻʾһϴļ

	

	-l,--files-with-matches

		ֹȡֻ֮ļݷָʽļơòֻ

ʾһϴļ

	

	-n,--line-number

		ÿзϷʽ֮ǰļекš

	

	-q,--quiet,--silent

		ֹ̬ʾκϢɨ轫ڲ鵽һʱֹ

-s--no-messagesѡ



	-r,--recursive

		ݹضĿ¼µļѡʹ-d recurseѡ



	-s,--no-messages

		ʾκļڻļɶĴϢֲʾBSD grepû

GNU grepе-q ѡBAS grep-s ѡִеĽGNU grep-qѡͬ

ڱдֲܻBSDshellűʱҪʹ-q-sѡӦýض

/dev/null



	-a,--test

		ԴļеĶݡͨ£grepָҵϷʽݵ

ƥļǶƸʽıʱgrepֻôһļ뷶ʽ

ƥʾݡʹѡǿʹgrepʾƥ

ݣ۴ļǷΪļ



	-v,--revert-match

		תңвʽУʾЩеݡ



	-w,--word-regexp

		ֻʾļַƥСҲ˵ƥ䷶ʽַ׻

δԷıַβԷıַʼıַָ֡ͻߵȡ



	-x,--line-regexp

		ֻѡʾȫƥС



	-y	˲Чͬʹ-i



	-U,--binary

		ļɶƸʽĬ£MS-DOSMS-WindowsϵͳУgrepļ

32ֽвҲ²ļ͡grepļΪıļԭ

аеCRַΪʹʽеġ^͡$-U

ֹ˲ʹļݲƥ乤ļıļôδCR/LF

ַʹgrepĹʽ󡣴ѡMS-DOSMS-Windowsϵͳб֧֡



	-u,--unix-byte-offsets

		ӡUnixļַƫƺšѡʹgrepڴļʱļUnix

ıļCRַıļUnixgrepһġ˲ֻ

-bͬʱʱŲáͬ˲MS-DOSMS-Windowsϵͳб֧֡



ʽ

	νʽָضַһַʽĹĳЩѧ

ʽͨʹøַŻͨСıʽһضĹʽ



	grepʹֲͬĹʽ﷨ġ͡չġGNU grepУʹ

ֲͬı﷨ڹʹԷûʲôӦУʽ

һľԡչʽʽչʽ

и



	Ĺƥ䵥һַĹʽһַĸ֣Ǳ

ǹɹʽκ⺬Ԫַʹùжǰ÷б

Ρ



	һɡ[͡]Χַƥļκһַͬе

ַǡ^ûгֵַƥļκַ磬ʽ[01234

56789]ƥκεһ֡ҪùʽASCIIַд[a

-zA-Z]󣬻һԤضɹʹãǵƾҽԣǣ[

:alnum'][:alpha:][:cntrl:][:digit:][:graph:][:lower:][:print:][:pun

ct:][:space:][:upper:][:xdigit:]磺[[:alnum:]]ָ[0-9A-Za-z]ַ

һʽֱдASCIIı룬ǰһʽֻдһָࡣע⣺гֵ

űҲЩƵһ֣ȻҲдָУܶԪַַ嵥

ûضġ





	㡰.ƥκһһַ



	š^ͷš$ֱƥ׺δԪַš\&lt;ͷš\&gt;

ƥ䵥ʵͷβš\bƥһʵı߽ġַ\B

ƥǴʱ߽κοַ



	һʽõѭ

	?	ƥǰһ0-1Ρ



	*	ƥǰһַ1Ρ

		

	+	ظƥǰһ1ϡ



	{n}	ظƥǰһnΡ



	{n,}	ظƥǰһnϡ



	{,m}ظƥǰһmΡ



	{n,m}	ظƥǰһnmΡ



	ԽϵĹʽʹáͬʱӹʽƥ

ڴϹʽʾ׼ϡ



	ԽϵĹʽá|ѡһĲʹáеκһ

ʽƥΪϹʽ



	ظƥȨ޸ڴƥ䣬ƥǰǰ˳ƥġӱ

ʽԲΧͿԸԭȨޡ



	\nеnһһƥǰɵnĹʽƥ





	ڻʽУԪַ?+{|(͡)ʧȥ䱾

壬ҪʹЩַΪƥʹ÷бΣ磺\?\+

\{\|\(͡\)



	egrepУԪַ{ʧȥ䱾壬ʹá\{Ρ





	ͨйҵƥʱ˳ʱķֵ0ûҵ

ƥ򷵻1ʹ-vô͸պ෴ڳй

﷨޷ʵļϵͳʱ򽫷2





	bug-gnu-utils@gnu.orgżⲿд롰grepַ

ż



	õ{m,n}ʽдظʱܻռôڴ档⣬

ıʽʱռôڴ沢ʹʱָпڴ





	ûʹúпҪʱ䡣



GNU Project		    1998/11/22

ߣ

2000/10/23</pre>

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