\u5143\u5b57\u7b26\u901a\u5e38\u5728Linux\u4e2d\u5206\u4e3a\u4e24\u7c7b\uff1aShell\u5143\u5b57\u7b26\uff0c\u7531Linux Shell\u8fdb\u884c\u89e3\u6790\uff1b
\n\u6b63\u5219\u8868\u8fbe\u5f0f\u5143\u5b57\u7b26\uff0c\u7531vi\/grep\/sed\/awk\u7b49\u6587\u672c\u5904\u7406\u5de5\u5177\u8fdb\u884c\u89e3\u6790\uff1b
\n\u6b63\u5219\u8868\u8fbe\u5f0f\u4e00\u822c\u4ee5\u6587\u672c\u884c\u8fdb\u884c\u5904\u7406\uff0c\u5728\u8fdb\u884c\u4e0b\u9762\u5b9e\u4f8b\u4e4b\u524d\uff0c\u5148\u4e3agrep\u547d\u4ee4\u8bbe\u7f6e--color\u53c2\u6570\uff1a<\/p>\n
 class=\"\">$<\/span>\u00a0alias\u00a0grep='grep\u00a0--color=auto'<\/span>\r\n<\/pre>\n\u8fd9\u6837\u6bcf\u6b21\u8fc7\u6ee4\u51fa\u6765\u7684\u5b57\u7b26\u4e32\u90fd\u4f1a\u5e26\u8272\u5f69\u4e86\u3002<\/p>\n
\u5728\u5f00\u59cb\u4e4b\u524d\u8fd8\u9700\u8981\u505a\u4e00\u4ef6\u4e8b\u60c5\uff0c\u5c31\u662f\u521b\u5efa\u4e00\u4e2a\u6d4b\u8bd5\u7528\u7684re-file\u6587\u4ef6\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n
 class=\"\">$<\/span>\u00a0cat\u00a0re-file<\/span>\r\nI\u00a0had\u00a0a\u00a0lovely\u00a0time\u00a0on\u00a0our\u00a0little\u00a0picnic.\r\nLovers\u00a0were\u00a0all\u00a0around\u00a0us.\u00a0It\u00a0is\u00a0springtime.\u00a0Oh\r\nlove,\u00a0how\u00a0much\u00a0I\u00a0adore\u00a0you.\u00a0Do\u00a0you\u00a0know\r\nthe\u00a0extent\u00a0of\u00a0my\u00a0love?\u00a0Oh,\u00a0by\u00a0the\u00a0way,\u00a0I\u00a0think\r\nI\u00a0lost\u00a0my\u00a0gloves\u00a0somewhere\u00a0out\u00a0in\u00a0that\u00a0field\u00a0of\r\nclover.\u00a0Did\u00a0you\u00a0see\u00a0them?\u00a0\u00a0I\u00a0can\u00a0only\u00a0hope\u00a0love.\r\nis\u00a0forever.\u00a0I\u00a0live\u00a0for\u00a0you.\u00a0It's\u00a0hard\u00a0to\u00a0get\u00a0back\u00a0in\u00a0the\r\ngroove.<\/pre>\n class=\"\">$<\/span>\u00a0cat\u00a0linux.txt<\/span>\r\nLinux\u00a0is\u00a0a\u00a0good\u00a0\r\ngod\u00a0assdxw\u00a0bcvnbvbjk\r\ngreatttttt\u00a0\u00a0wexcvxc\r\noperaaaating\u00a0\u00a0dhfghfvx\r\ngooodfs\u00a0awrerdxxhkl\r\ngdsystem\u00a0awxxxx\r\nglad\r\ngood\r\n<\/pre>\n\u6b63\u5219\u8868\u8fbe\u5f0f\u5143\u5b57\u7b26<\/strong><\/div>\n<\/section>\n<\/section>\n<\/section>\n<\/p>\n
\u7279\u6b8a\u7684\u5143\u5b57\u7b26<\/strong><\/div>\n<\/p>\n
\u6269\u5c55\u7684\u6b63\u5219\u8868\u8fbe\u5f0f<\/strong><\/div>\n<\/p>\n
<\/section>\n\n\u5b9e\u64cd<\/strong><\/div>\n\u5339\u914d\u4ee5love\u5f00\u5934\u7684\u6240\u6709\u884c<\/strong><\/span><\/div>\n<\/section>\n\n class=\"\">$<\/span>\u00a0grep\u00a0'^love'\u00a0re-file<\/span>\r\nlove,\u00a0how\u00a0much\u00a0I\u00a0adore\u00a0you.\u00a0Do\u00a0you\u00a0know\r\n<\/pre>\n\u5339\u914dlove\u7ed3\u5c3e\u7684\u6240\u6709\u884c<\/strong><\/span><\/div>\n class=\"\">$<\/span>\u00a0grep\u00a0'love$'\u00a0re-file<\/span>\r\nclover.\u00a0Did\u00a0you\u00a0see\u00a0them?\u00a0\u00a0I\u00a0can\u00a0only\u00a0hope\u00a0love.\r\n<\/pre>\n\u5339\u914d\u4ee5l\u5f00\u5934\uff0c\u4e2d\u95f4\u5305\u542b\u4e24\u4e2a\u5b57\u7b26\uff0c\u7ed3\u5c3e\u662fe\u7684\u6240\u6709\u884c<\/strong><\/span><\/div>\n class=\"\">$<\/span>\u00a0grep\u00a0'l..e'\u00a0re-file<\/span>\r\nI\u00a0had\u00a0a\u00a0lovely\u00a0time\u00a0on\u00a0our\u00a0little\u00a0picnic.\r\nlove,\u00a0how\u00a0much\u00a0I\u00a0adore\u00a0you.\u00a0Do\u00a0you\u00a0know\r\nthe\u00a0extent\u00a0of\u00a0my\u00a0love?\u00a0Oh,\u00a0by\u00a0the\u00a0way,\u00a0I\u00a0think\r\nI\u00a0lost\u00a0my\u00a0gloves\u00a0somewhere\u00a0out\u00a0in\u00a0that\u00a0field\u00a0of\r\nclover.\u00a0Did\u00a0you\u00a0see\u00a0them?\u00a0\u00a0I\u00a0can\u00a0only\u00a0hope\u00a0love.\r\nis\u00a0forever.\u00a0I\u00a0live\u00a0for\u00a0you.\u00a0It's\u00a0hard\u00a0to\u00a0get\u00a0back\u00a0in\u00a0the\r\n<\/pre>\n\u5339\u914d0\u4e2a\u6216\u591a\u4e2a\u7a7a\u884c\uff0c\u540e\u9762\u662flove\u7684\u5b57\u7b26<\/strong><\/span><\/div>\n class=\"\">$<\/span>\u00a0grep\u00a0'\u00a0*love'\u00a0re-file<\/span>\r\nI\u00a0had\u00a0a\u00a0lovely\u00a0time\u00a0on\u00a0our\u00a0little\u00a0picnic.\r\nlove,\u00a0how\u00a0much\u00a0I\u00a0adore\u00a0you.\u00a0Do\u00a0you\u00a0know\r\nthe\u00a0extent\u00a0of\u00a0my\u00a0love?\u00a0Oh,\u00a0by\u00a0the\u00a0way,\u00a0I\u00a0think\r\nI\u00a0lost\u00a0my\u00a0gloves\u00a0somewhere\u00a0out\u00a0in\u00a0that\u00a0field\u00a0of\r\nclover.\u00a0Did\u00a0you\u00a0see\u00a0them?\u00a0\u00a0I\u00a0can\u00a0only\u00a0hope\u00a0love.\r\n<\/pre>\n\u5339\u914dlove\u6216Love<\/strong><\/span><\/div>\n class=\"\">$<\/span>\u00a0grep\u00a0'[Ll]ove'\u00a0re-file\u00a0\u00a0#\u00a0\u5bf9l\u4e0d\u533a\u5206\u5927\u5c0f\u5199<\/span>\r\nI\u00a0had\u00a0a\u00a0lovely\u00a0time\u00a0on\u00a0our\u00a0little\u00a0picnic.\r\nLovers\u00a0were\u00a0all\u00a0around\u00a0us.\u00a0It\u00a0is\u00a0springtime.\u00a0Oh\r\nlove,\u00a0how\u00a0much\u00a0I\u00a0adore\u00a0you.\u00a0Do\u00a0you\u00a0know\r\nthe\u00a0extent\u00a0of\u00a0my\u00a0love?\u00a0Oh,\u00a0by\u00a0the\u00a0way,\u00a0I\u00a0think\r\nI\u00a0lost\u00a0my\u00a0gloves\u00a0somewhere\u00a0out\u00a0in\u00a0that\u00a0field\u00a0of\r\nclover.\u00a0Did\u00a0you\u00a0see\u00a0them?\u00a0\u00a0I\u00a0can\u00a0only\u00a0hope\u00a0love.\r\n<\/pre>\n\u5339\u914dA-Z\u7684\u5b57\u6bcd\uff0c\u5176\u6b21\u662fove<\/strong><\/span><\/div>\n class=\"\">$<\/span>\u00a0grep\u00a0'[A-Z]ove'\u00a0re-file<\/span>\r\nLovers\u00a0were\u00a0all\u00a0around\u00a0us.\u00a0It\u00a0is\u00a0springtime.\u00a0Oh\r\n<\/pre>\n\u5339\u914d\u4e0d\u5728A-Z\u8303\u56f4\u5185\u7684\u4efb\u4f55\u5b57\u7b26\u884c\uff0c\u6240\u6709\u7684\u5c0f\u5199\u5b57\u7b26<\/strong><\/span><\/div>\n class=\"\">$<\/span>\u00a0grep\u00a0'[^A-Z]'\u00a0re-file<\/span>\r\nI\u00a0had\u00a0a\u00a0lovely\u00a0time\u00a0on\u00a0our\u00a0little\u00a0picnic.\r\nLovers\u00a0were\u00a0all\u00a0around\u00a0us.\u00a0It\u00a0is\u00a0springtime.\u00a0Oh\r\nlove,\u00a0how\u00a0much\u00a0I\u00a0adore\u00a0you.\u00a0Do\u00a0you\u00a0know\r\nthe\u00a0extent\u00a0of\u00a0my\u00a0love?\u00a0Oh,\u00a0by\u00a0the\u00a0way,\u00a0I\u00a0think\r\nI\u00a0lost\u00a0my\u00a0gloves\u00a0somewhere\u00a0out\u00a0in\u00a0that\u00a0field\u00a0of\r\nclover.\u00a0Did\u00a0you\u00a0see\u00a0them?\u00a0\u00a0I\u00a0can\u00a0only\u00a0hope\u00a0love.\r\nis\u00a0forever.\u00a0I\u00a0live\u00a0for\u00a0you.\u00a0It's\u00a0hard\u00a0to\u00a0get\u00a0back\u00a0in\u00a0the\r\ngroove.\r\n<\/pre>\n\u5339\u914dlove<\/strong><\/span><\/div>\n class=\"\">$<\/span>\u00a0grep\u00a0'love\\.'\u00a0re-file<\/span>\r\nclover.\u00a0Did\u00a0you\u00a0see\u00a0them?\u00a0\u00a0I\u00a0can\u00a0only\u00a0hope\u00a0love.\r\n<\/pre>\n\u5339\u914d\u7a7a\u683c<\/strong><\/span><\/div>\n class=\"\">$<\/span>\u00a0grep\u00a0'^$'\u00a0re-file<\/span>\r\n<\/pre>\n\u5339\u914d\u4efb\u610f\u5b57\u7b26<\/strong><\/span><\/div>\nclass=\"\">$<\/span>\u00a0grep\u00a0'.*'\u00a0re-file<\/span>\r\nI\u00a0had\u00a0a\u00a0lovely\u00a0time\u00a0on\u00a0our\u00a0little\u00a0picnic.\r\nLovers\u00a0were\u00a0all\u00a0around\u00a0us.\u00a0It\u00a0is\u00a0springtime.\u00a0Oh\r\nlove,\u00a0how\u00a0much\u00a0I\u00a0adore\u00a0you.\u00a0Do\u00a0you\u00a0know\r\nthe\u00a0extent\u00a0of\u00a0my\u00a0love?\u00a0Oh,\u00a0by\u00a0the\u00a0way,\u00a0I\u00a0think\r\nI\u00a0lost\u00a0my\u00a0gloves\u00a0somewhere\u00a0out\u00a0in\u00a0that\u00a0field\u00a0of\r\nclover.\u00a0Did\u00a0you\u00a0see\u00a0them?\u00a0\u00a0I\u00a0can\u00a0only\u00a0hope\u00a0love.\r\nis\u00a0forever.\u00a0I\u00a0live\u00a0for\u00a0you.\u00a0It's\u00a0hard\u00a0to\u00a0get\u00a0back\u00a0in\u00a0the\r\ngroove.\r\n<\/pre>\n\u524d\u9762o\u5b57\u7b26\u91cd\u590d2\u52304\u6b21<\/strong><\/span><\/div>\n class=\"\">$<\/span>\u00a0grep\u00a0'o\\{2,4\\}'\u00a0re-file<\/span>\r\ngroove.\r\n<\/pre>\n\u91cd\u590do\u5b57\u7b26\u81f3\u5c112\u6b21<\/strong><\/span><\/div>\n class=\"\">$<\/span>\u00a0grep\u00a0'o\\{2,\\}'\u00a0re-file<\/span>\r\ngroove.\r\n<\/pre>\n\u91cd\u590d0\u5b57\u7b26\u6700\u591a2\u6b21<\/strong><\/span><\/div>\n class=\"\">$<\/span>\u00a0grep\u00a0'o\\{,2\\}'\u00a0re-file<\/span>\r\nI\u00a0had\u00a0a\u00a0lovely\u00a0time\u00a0on\u00a0our\u00a0little\u00a0picnic.\r\nLovers\u00a0were\u00a0all\u00a0around\u00a0us.\u00a0It\u00a0is\u00a0springtime.\u00a0Oh\r\nlove,\u00a0how\u00a0much\u00a0I\u00a0adore\u00a0you.\u00a0Do\u00a0you\u00a0know\r\nthe\u00a0extent\u00a0of\u00a0my\u00a0love?\u00a0Oh,\u00a0by\u00a0the\u00a0way,\u00a0I\u00a0think\r\nI\u00a0lost\u00a0my\u00a0gloves\u00a0somewhere\u00a0out\u00a0in\u00a0that\u00a0field\u00a0of\r\nclover.\u00a0Did\u00a0you\u00a0see\u00a0them?\u00a0\u00a0I\u00a0can\u00a0only\u00a0hope\u00a0love.\r\nis\u00a0forever.\u00a0I\u00a0live\u00a0for\u00a0you.\u00a0It's\u00a0hard\u00a0to\u00a0get\u00a0back\u00a0in\u00a0the\r\ngroove.\r\n<\/pre>\n\u91cd\u590d\u524d\u4e00\u4e2a\u5b57\u7b26\u4e00\u4e2a\u6216\u4e00\u4e2a\u4ee5\u4e0a<\/strong><\/span><\/div>\n class=\"\">$<\/span>\u00a0egrep\u00a0\"go+d\"\u00a0linux.txt<\/span>\r\nLinux\u00a0is\u00a0a\u00a0good\r\ngod\u00a0assdxw\u00a0bcvnbvbjk\r\ngooodfs\u00a0awrerdxxhkl\r\ngood\r\n#<\/span>####0\u4e2a\u6216\u8005\u4e00\u4e2a\u5b57\u7b26<\/span>\r\nansheng@Ubuntu:\/tmp$\u00a0egrep\u00a0\"go?d\"\u00a0linux.txt\r\ngod\u00a0assdxw\u00a0bcvnbvbjk\r\ngdsystem\u00a0awxxxx\r\n<\/pre>\n\u6216\uff0c\u67e5\u627e\u591a\u4e2a\u5b57\u7b26\u4e32<\/p>\n
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