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for G start and end, middle is at least one o string, namely Gog, Goog....gooog ... such as[Email protected]:~/tmp$ grep-n ' goo*g ' regular_express.txt18:google is the best tools for search keyword.19:goooooogle yes!Search for the lines of G start and end strings[Email protected]:~/tmp$ grep-n ' g.*g ' regular_express.txt//. * Denotes 0 or more arbitrary characters1: "Open Source" is a good mechanism to develop programs.14:the GD Software is a libra

" are returned. USE NorthwindGOSELECT ProductNameFROM ProductsWHERE CONTAINS(ProductName, ' "sasquatch ale" OR "steeleye stout" ')GOC. Use contains with This example will returnProductnameThere must be at least one word in the item line with the name of all products starting with Chos. USE NorthwindGOSELECT ProductNameFROM ProductsWHERE CONTAINS(ProductName, ' "choc*" ')GOD. Use contains and or with In this example, all the class descriptions containing the string "sea" or "Bread" are returned.

* ' regular_express.txt1: "Open Source" is a good mechanism to develop programs.2:apple I s my favorite Food.3:football game isn't use feet only.9:oh! The soup taste good.18:google is the best tools for search Keyword.19:goooooogle yes!If I want the string to start with the end is G, but two g can only exist between at least one o, that is, Gog, Goog, Gooog .... Wait, what's that supposed to be?[Email protected] ~]# grep-n ' goo*g ' Regular_express.tx

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) -- convert data to int to restore the original encoding method.W) SELECT *,X) CONVERT (INT, userSalary)Y) FROM test 2. symmetric key:Copy codeThe Code is as follows: a) -- create a symmetric keyB) USE AdventureWorksC) GOD) CREATE Your Ric KEY SymKey123E) with algorithm = TRIPLE_DES encryption by password = 'P @ ssw0rd'F) GOG) -- Note: When enabled, you must first OPEN your Ric KEY and password, otherwise the generated data will be null. It must be u

classes, allowing us to construct new class definitions and extend the functionality of existing classesCode:1 public class Animal 2 {3 private string _name; 4 5 public string name 6 {7 get {retur n _name; } 8 set {_name = value;} 9 }10 one private string _type;12 public string Type14 { get { return _type; }16 set {_type = value;}

life cycle and see the destroy implementation of Timplclass.inherited;End6. Interface and RttiIn Delphi, the interface Gog pointer is defined at the VMT-72 Displacement: vmtintftable =-72.Related functions:Getinterfacecount; Gets the number of interfaces.getinterfacetable; Gets the interface table.Related structure:Tinterfaceentry = Packed recordIid:tguid;Vtable:pointer;Ioffset:integer;Implgetter:integer;Endpinterfacetable = ^tinterfacetable;tinterfa

(regular expression) before one character"Goo*g" stands for Gog,goog,gooog ... such as# grep-n ' Goo*g ' regular_express.txt10. \ = Matches the preceding character 0 or 1 timesMatch the O character 0 or one time# grep-n Ro\?t Regular_express.txt11. \+ matches the preceding character at least onceMatch a string that contains at least one O characterGrep-n ro\+t Regular_express.txtNote: the. symbol represents any character,. * represents an empty chara

"minimum of two + O" strings, we need ooo*[Email protected] ~]# grep-n "ooo*" Agc.txt5:the Soup Taste good6:the Soup Teaste Good 97:apple is my favorite foo9:football game isn't use feet only.10:google is the best tools for search keyword.11:goooooogle yes!Want string start and end is G, but two g can only exist between at least one o, that is Gog, Goog, Gooog ....[Email protected] ~]# grep-n "Goo*g" Agc.txt10:google is the best tools for search keyw

yes!If I want the string to start with the end is G, but two g can only exist between at least one o, that is, Gog, Goog, Gooog .... Wait, what's that supposed to be?[Email protected] ~]# grep-n ' goo*g ' Regular_express.txt18:google is the best tools for search Keyword.19:goooooogle Yes !If I want to find the line where G begins and ends with G, the characters are optional[Email protected] ~]# grep-n ' g.*g ' regular_express.txt1: "Open Source" is a

|head-n |tail-n 68. Show Blank LinesCopy the code code as follows:# grep-n ' ^$ ' regular_express.txt9. Find out G?? D string, beginning G four string ending DCopy the code code as follows:# Grep-n ' G.. d ' Regular_express.txtO* represents the null character (that is, there are no characters) or one to n o characters, so grep-n ' o* ' regular_express.txt will print out all the lines,11.oo* represents o+ empty characters or one to n o characters, so grep-n ' oo* ' regular_express.txt will print

at least one o, that is, Gog, Goog, Gooog .... Wait, what's that supposed to be? # grep-n ' Goo*g ' regular_express.txtIf I want to find the line where G begins and ends with G, the characters are optional# grep-n ' G.*g ' regular_express.txt　　What if I want to find the line of "any number"? Because there are only numbers, it becomes:# grep-n ' [0-9][0-9]* ' Regular_express.txt　　limit the continuous RE character range {}. we can use. With the RE char

-n ' o* ' Regular_express.txt" will print out all the data on the terminal!When we need a "minimum of two o ' strings", we need ooo*, i.e.:[Email protected] ~]# grep-n ' ooo* ' regular_express.txt1: "Open Source" is a good mechanism to develop programs.2:apple I s my favorite Food.3:football game isn't use feet only.9:oh! The soup taste good.18:google is the best tools for search Keyword.19:goooooogle yes!If I want the string to start with the end is G, but two g can only exist between at least

-n ' o* ' Regular_express.txt" will print out all the data on the terminal!When we need a "minimum of two o ' strings", we need ooo*, i.e.:[Email protected] ~]# grep-n ' ooo* ' regular_express.txt1: "Open Source" is a good mechanism to develop programs.2:apple I s my favorite Food.3:football game isn't use feet only.9:oh! The soup taste good.18:google is the best tools for search Keyword.19:goooooogle yes!If I want the string to start with the end is G, but two g can only exist between at least

* ' Regular_express.txt" will print out all the data on the terminal!When we need a "minimum of two o ' strings", we need ooo*, i.e.:[Email protected] ~]# grep-n ' ooo* ' regular_express.txt1: "Open Source" is a good mechanism to develop programs.2:apple I s my favorite Food.3:football game isn't use feet only.9:oh! The soup taste good.18:google is the best tools for search Keyword.19:goooooogle yes!If I want the string to start with the end is G, but two g can only exist between at least one o,

-n ' o* ' Regular_express.txt" will print out all the data on the terminal!When we need a "minimum of two o ' strings", we need ooo*, i.e.:[Email protected] ~]# grep-n ' ooo* ' regular_express.txt1: "Open Source" is a good mechanism to develop programs.2:apple I s my favorite Food.3:football game isn't use feet only.9:oh! The soup taste good.18:google is the best tools for search Keyword.19:goooooogle yes!If I want the string to start with the end is G, but two g can only exist between at least

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"owning a byte or more of an O", so "Grep-n ' o* ' Regular_express.txt" will print out all the data on the terminal. When we need "at least two o ' string", we need ooo*, which is: [Root@www ~]# grep-n ' ooo* ' regular_express.txt 1: ' Open Source ' is a good mechanism to develop programs. 2:apple is my favorite food. 3:football game isn't use feet only. 9:oh! The soup taste good. 18:google is the best tools for search keyword. 19:goooooogle yes! If I want the string to start and end with G,

different from outside! Represents "Reverse selection" within [], and outside [] represents the meaning of positioning at the beginning of the line! Line ending with a decimal point (.) At the end of the row: Grep-n ' \.$ ' regular_express.txt Note in particular that because the decimal point has other meanings (described below), you must use the escape character () to remove its special meaning! #找出空白行 grep-n ' ^$ ' regular_express.txt Any one byte. With Duplicate by