{"id":264,"date":"2016-12-12T20:28:33","date_gmt":"2016-12-12T12:28:33","guid":{"rendered":"https:\/\/blog.freesilo.com\/?p=264"},"modified":"2016-12-12T20:28:33","modified_gmt":"2016-12-12T12:28:33","slug":"grep%ef%bc%8cegrep%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/freesilo.com\/?p=264","title":{"rendered":"grep\uff0cegrep\u7528\u6cd5"},"content":{"rendered":"

\u6587\u672c\u641c\u7d22\u5de5\u5177\uff1agrep, egrep<\/strong>
\ngrep: Global search REgular expression and Print out the line.
\n\u6839\u636e\u4f18\u5316\u6307\u5b9a\u7684\u201c\u6a21\u5f0f\uff08pattern\uff09\u201d\u5bf9\u76ee\u6807\u6587\u672c\u8fdb\u884c\u8fc7\u6ee4\uff0c\u663e\u793a\u88ab\u6a21\u5f0f\u5339\u914d\u5230\u7684\u884c\u3002<\/p>\n

\u8bed\u6cd5\uff1agrep [OPTION]… ‘PATTERN’ FILE…<\/p>\n

\u5e38\u7528\u9009\u9879\uff1a
\n-c \u53ea\u8f93\u51fa\u5339\u914d\u884c\u7684\u4e2a\u6570\u3002
\n-i \u4e0d\u533a\u5206\u5927\u5c0f\u5199\uff08\u53ea\u9002\u7528\u4e8e\u5355\u5b57\u7b26\uff09\u3002
\n-h \u67e5\u8be2\u591a\u6587\u4ef6\u65f6\u4e0d\u663e\u793a\u6587\u4ef6\u540d\u3002
\n-l \u67e5\u8be2\u591a\u6587\u4ef6\u65f6\u53ea\u8f93\u51fa\u5305\u542b\u5339\u914d\u5b57\u7b26\u7684\u6587\u4ef6\u540d\u3002
\n-n \u663e\u793a\u5339\u914d\u884c\u53ca\u884c\u53f7\u3002
\n-s \u4e0d\u663e\u793a\u4e0d\u5b58\u5728\u6216\u65e0\u5339\u914d\u6587\u672c\u7684\u9519\u8bef\u4fe1\u606f\u3002
\n-v \u663e\u793a\u4e0d\u5305\u542b\u5339\u914d\u6587\u672c\u7684\u6240\u6709\u884c\u3002
\n-o \u4ec5\u663e\u793a\u5339\u914d\u5230\u7684\u5185\u5bb9
\n-E \u4f7f\u7528\u6269\u5c55\u6b63\u5219\u8868\u8fbe\u5f0f
\n-V \u663e\u793a\u8f6f\u4ef6\u7248\u672c\u4fe1\u606f
\n\u4f7f\u7528grep\u5339\u914d\u65f6\u6700\u597d\u7528\u53cc\u5f15\u53f7\u5f15\u8d77\u6765\uff0c\u9632\u6b62\u88ab\u7cfb\u7edf\u8bef\u8ba4\u4e3a\u53c2\u6570\u6216\u8005\u7279\u6b8a\u547d\u4ee4\uff0c\u4e5f\u53ef\u4ee5\u5339\u914d\u591a\u4e2a\u5355\u8bcd\u3002<\/p>\n

\u6b63\u5219\u8868\u8fbe\u5f0f\uff1a\u7531\u4e00\u7c7b\u5b57\u7b26\u4e66\u5199\u7684\u6a21\u5f0f\uff0c\u5176\u4e2d\u6709\u4e9b\u5b57\u7b26\u4e0d\u8868\u793a\u5b57\u7b26\u7684\u5b57\u9762\u610f\u4e49\uff0c\u800c\u662f\u8868\u793a\u63a7\u5236\u6216\u901a\u914d\u7684\u529f\u80fd\uff1b<\/p>\n

\u5206\u7c7b\uff1a
\n\u57fa\u672c\u6b63\u5219\u8868\u8fbe\u5f0f
\n\u6269\u5c55\u6b63\u5219\u8868\u8fbe\u5f0f<\/p>\n

\u57fa\u672c\u6b63\u5219\u8868\u8fbe\u5f0f\uff1a
\n\u5b57\u7b26\u5339\u914d\uff1a
\n.: \u5339\u914d\u4efb\u610f\u5355\u4e2a\u5b57\u7b26
\n[]:\u5339\u914d\u6307\u5b9a\u96c6\u5408\u4e2d\u7684\u4efb\u610f\u5355\u4e2a\u5b57\u7b26
\n[[:digit:]], [0-9]
\n[[:lower:]], [a-z]
\n[[:upper:]], [A-Z]
\n[[:alpha:]], [a-zA-Z]
\n[[:alnum:]], [0-9a-zA-Z]
\n[[:space:]]
\n[[:punct:]]
\n[^]\uff1a\u5339\u914d\u6307\u5b9a\u96c6\u5408\u5916\u7684\u4efb\u610f\u5355\u4e2a\u5b57\u7b26<\/p>\n

\u5339\u914d\u6b21\u6570\uff1a\u7528\u4e8e\u5bf9\u5176\u524d\u9762\u7d27\u90bb\u7684\u5b57\u7b26\u6240\u80fd\u591f\u51fa\u73b0\u7684\u6b21\u6570\u4f5c\u51fa\u9650\u5b9a
\ntest\u4e3a\u6587\u672c\u6587\u4ef6
\nxy
\nxxy
\nxxxxy
\nxxxxxxxxy
\ny
\naby
\nabbbbbby
\nabababyab
\nby
\nbby<\/p>\n

*\uff1a\u5339\u914d\u5176\u524d\u9762\u7684\u5b57\u7b26\u4eba\u4e00\u6b21\uff0c0,1\u6216\u591a\u6b21
\ngrep –color\u00a0x*y test \u00a0x\u51fa\u73b0\u7684\u6b21\u6570\u4e3a>=0\u6b21\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0 y ay xxxy
\ngrep –color\u00a0ax*y test a+ nx + y n>=0 \u00a0ay axy axxxxy<\/p>\n

\\?\uff1a\u5339\u914d\u5176\u524d\u9762\u7684\u5b57\u7b260\u6b21\u62161\u6b21
\ngrep –color ‘x\\?y’ file \u00a0y xy xxy\u00a0<\/strong>aby<\/strong><\/p>\n

\\+\uff1a\u5339\u914d\u5176\u524d\u9762\u7684\u5b57\u7b26\u81f3\u5c11\u51fa\u73b01\u6b21
\ngrep –color ‘ab\\+y’ test \u00a0a+nb+y n\u5927\u4e8e\u7b49\u4e8e1\u00a0\u00a0aby<\/strong>\u00a0abbbbbby\u00a0<\/strong>abababy<\/strong>ab<\/p>\n

\\{m\\}\uff1a\u5339\u914d\u5176\u524d\u9762\u7684\u5b57\u7b26m\u6b21
\ngrep –color ‘x\\{2\\}y’ test \u00a0 nx+y n\u5927\u4e8e\u7b49\u4e8e2\u00a0xxy \u00a0<\/strong>xxxxy<\/strong><\/p>\n

\\{m,n\\}\uff1a\u5339\u914d\u5176\u524d\u9762\u7684\u5b57\u7b26\u81f3\u5c11m\u6b21\u4e4b\u591an\u6b21
\ngrep –color ‘x\\{2,4\\}y’ \u00a0test nx+y \u00a0n\u5927\u4e8e\u7b49\u4e8e2 n\u5c0f\u4e8e\u7b49\u4e8e4 \u00a0xxy xxxxy\u00a0<\/strong>xxxxxxxxy
\n<\/strong>
\n\u4f4d\u7f6e\u951a\u5b9a\uff1a
\n^\uff1a\u884c\u9996\u951a\u5b9a \u5199\u5728\u6a21\u5f0f\u7684\u6700\u5de6\u4fa7
\n$\uff1a\u884c\u5c3e\u951a\u5b9a \u5199\u5728\u6a21\u5f0f\u7684\u6700\u6709\u4fa7
\n^$\uff1a\u7a7a\u767d\u884c
\n\\<: \u8bcd\u9996\u951a\u5b9a, \u00a0\u51fa\u73b0\u5728\u8981\u67e5\u627e\u7684\u5355\u8bcd\u6a21\u5f0f\u7684\u5de6\u4fa7\uff1b\\<char
\ngrep –color ‘\\<aba’ \u00a0test\u00a0<strong=””>abababyab<\/p>\n

\\>\uff1a\u8bcd\u5c3e\u951a\u5b9a,\u00a0\u51fa\u73b0\u5728\u8981\u67e5\u627e\u7684\u5355\u8bcd\u6a21\u5f0f\u7684\u53f3\u4fa7\uff1bchar\\>
\ngrep –color ‘by\\>’ test \u00a0 aby<\/strong> abbbbbby<\/strong> by<\/strong> bby
\n<\/strong>
\n\\<pattern\\>: \u5339\u914d\u5355\u8bcd<\/p>\n

\u5206\u7ec4\uff1a\\(\\)
\n\u540e\u5411\u5f15\u7528\uff1a\u6a21\u5f0f\u4e2d\uff0c\u5982\u679c\u4f7f\u7528\\(\\)\u5b9e\u73b0\u4e86\u5206\u7ec4\uff0c\u5728\u67d0\u884c\u6587\u4ef6\u7684\u68c0\u67e5\u4e2d\uff0c\u5982\u679c\\(\\)\u7684\u6a21\u5f0f\u5339\u914d\u5230\u4e86\u67d0\u5185\u5bb9\uff0c\u6b64\u5185\u5bb9\u540e\u9762\u7684\u6a21\u5f0f\u4e2d\u53ef\u4ee5\u88ab\u5f15\u7528\uff1b<\/p>\n

grep –color ‘\\(ab\\)\\{1,\\}y’ test aby<\/strong> abababy<\/strong>ab<\/p>\n

grep –color ‘ab\\{1,\\}y’ test\u00a0aby<\/strong>\u00a0abbbbbby<\/strong>\u00a0abababy<\/strong>ab<\/p>\n

grep –color ‘\\(ab\\)\\{1,\\}y\\1’ test \u00a0abab<\/strong>aby<\/strong>ab<\/strong><\/p>\n

egrep\u53ca\u6269\u5c55\u7684\u6b63\u5219\u8868\u8fbe\u5f0f<\/strong><\/p>\n

\u6269\u5c55\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u5143\u5b57\u7b26\uff1a
\n\u5b57\u7b26\u5339\u914d\uff1a
\n.
\n[]
\n[^]
\n\u5339\u914d\u6b21\u6570\u9650\u5b9a\uff1a
\n*
\n?: \u5339\u914d\u5176\u524d\u9762\u5b57\u7b260\u6b21\u62161\u6b21\uff1b
\n+\uff1a\u5339\u914d\u5176\u524d\u9762\u7684\u5b57\u7b26\u81f3\u5c111\u6b21\uff1b
\n{m}\uff1a\u5339\u914d\u5176\u524d\u9762\u7684\u5b57\u7b26m\u6b21\uff1b
\n{m,n}\uff1a{m,}, {0,n}
\n\u951a\u5b9a\uff1a
\n^
\n$
\n\\<, \\>: \\b
\n\u5206\u7ec4\uff1a
\n()<\/p>\n

\u652f\u6301\u540e\u5411\u5f15\u7528\uff1a\\1, \\2, …
\n\u6216\u8005\uff1a
\na|b: a\u6216\u8005b
\nab|cd\uff1a<\/p>\n

# grep -E ‘pattern’ file…
\n# egrep ‘pattern’ file…<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6587\u672c\u641c\u7d22\u5de5\u5177\uff1agrep, egrep grep: Global search R…
Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"class_list":["post-264","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/posts\/264","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/freesilo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=264"}],"version-history":[{"count":1,"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/posts\/264\/revisions"}],"predecessor-version":[{"id":265,"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/posts\/264\/revisions\/265"}],"wp:attachment":[{"href":"https:\/\/freesilo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=264"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/freesilo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=264"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/freesilo.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}