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The shell regular expression grep, sed, awk _linux shell

characters Copy Code code as follows: # grep-n ' ^[a-z] ' regular_express.txt 6. Show end of line as point. In that line Copy Code code as follows: # grep-n ' \.$ ' regular_express.txt 7. Display 5-9 rows of data Copy Code code as follows: # Cat-an Regular_express.txt |head-n |tail-n 6 8. Show Blank Lines Copy Code code as follows: # grep-n ' ^$ ' regular_express.txt 9. Find G?? D string, beginning G end d of four str

grep usage detailed grep and regular expressions _ regular expressions

Gog, Goog....gooog ... Wait woody@xiaoc:~/tmp$ grep-n ' goo*g ' regular_express.txt 18:google is the best tools for search keyword. 19:goooooogle yes! Search for the line at the beginning and end of G woody@xiaoc:~/tmp$ grep-n ' g.*g ' regular_express.txt//. * Represents 0 or more arbitrary characters 1: "Open Source" is a good mechanism to develop programs. 14:the GD Software is a library for drafting programs. 18:google is the best tools for searc

T-SQL Problem Solving highlights data encryption and decryption Complete Set

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 used with the

[Reprint] Powerful grep usage explained: grep and regular expressions

search keyword.19:goooooogle yes!Search 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 develo

The sixth chapter of the Avenue to Jane

, doing, and achieving. For example, "pattern" is a method that is the behavior of the code you wrote yesterday. It is only Gog that induces, extracts and promotes the inherent laws of these behaviors. Patterns require a certain amount of programming experience to understand. While the understanding process also requires programming experience, understanding objects also requires programming experience, and understanding MDA and SOA also requires prog

The grep command is detailed

-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

Detailed usage of grep: grep and Regular Expression

in the middle, that is, gog, goog... gooog...Woody @ xiaoc :~ /Tmp $ grep-n'Goo * G' regular_express.txt18: google is the best tools for search keyword.19: goooooogle yes! Search for the rows in which the string starting and ending with g is located.Woody @ xiaoc :~ /Tmp $ grep-n 'G. * G' regular_express.txt //. * Indicates 0 or multiple arbitrary characters.1: "Open Source" is a goodMechanisms to develop programs.14: The gd software is a library for

Miscellaneous about several JS frameworks

is engaged in FP, inert Computing Based JS Library (http://fitzgen.github.com/wu.js/), browser and node can be used inside. Iterators are the big data in Wu. What kind of inert computing? What about the magic horse of the iterator? The first example on the home page of this database is enlightened to answer these two questions, which is very friendly. In addition, high-order FN is also the focus. WuIt can be seen from personal names.Google Closure-pools.js Go to Google closure, and find that it

Lessons 7: Under the courtyard of Wenhua Temple

be put, or charming; the Lotus is decorated with colorful butterflies and colorful flowers. Wide variety of glaze bottlesThe wide variety of glaze bottles on display, products of the period of the Qing Dynasty. The biggest characteristic of this big bottle is its wide variety of glaze colors. The entire bottle is divided into 16 glaze segments from top to bottom, and various glaze segments are separated by golden circles. The mouth of the bottle is decorated with gold, purple, and green. The ne

Search for a paragraph with a keyword (grep) from the output -- grep-p usage

search keyword.19: goooooogle yes!Search for the start and end of g, with at least one o string in the middle, that is, gog, goog... gooog...Woody @ xiaoc :~ /Tmp $ grep-n 'Goo * G' regular_express.txt18: google is the best tools for search keyword.19: goooooogle yes!Search for the rows in which the string starting and ending with g is located.Woody @ xiaoc :~ /Tmp $ grep-n 'G. * G' regular_express.txt //. * Indicates 0 or multiple arbitrary characte

Grep Usage Details grep and Regular Expressions

represent any character. However, in a regular expression, * represents 0 or more characters with different meanings.For example, oo * indicates that the first o must exist, and the second o can have one or more or no, so it represents at least one o. Point. represents any character and must exist. G ?? D can be expressed in 'G .. d. Good, gxxd, gabd... all match. Woody @ xiaoc :~ /Tmp $ grep-n 'G .. d' regular_express.txt1: "Open Source" is a good mechanic to develop programs.9: Oh! The soup t

Oracle nested table

in the nested table corresponding to the master table his will be deleted ==================Directly insert a nested table ============================== Insert into the (select required_reading from course_material where Department = 'his ') Values ('gog', 'ggg ', 999) ----- The red one indicates a table. Note that the preceding one must be added to indicate that the table is a nested table. ==================Directly update the nested table ==

Powerful grep Usage Details: grep and Regular Expressions

keyword.19: goooooogle yes! Search for the start and end of G, with at least one o string in the middle, that is, Gog, Goog... gooog...Woody @ xiaoc :~ /Tmp $ grep-N 'Goo * G' regular_express.txt18: Google is the best tools for search keyword.19: goooooogle yes! Search for the rows in which the string starting and ending with G is located.Woody @ xiaoc :~ /Tmp $ grep-N 'G. * G' regular_express.txt //. * Indicates 0 or multiple arbitrary characters.1:

Decoration Design Pattern of Dark Horse programmers in Java

----------- Android training, Java training, and Java learning technology blog. We look forward to communicating with you! ------------ I learned the video from instructor Bi Xiangdong and made some summary here. To put it bluntly, the decoration mode is a kind of enhancement to the original functions. For example, if I have a base class myreader dedicated for reading On the basis of this feature, the derived class mytextreader that specifically reads text The derived class that specifically re

How does grep perform regular expression search?

only one o between the two g, that is, Gog, Goog, gooog... and so on, what should I do? [[emailprotected] ~]# grep -n ‘goo*g‘ regular_express.txt18:google is the best tools for search keyword.19:goooooogle yes! If I want to find the rows starting with and ending with G, the characters in the rows can be dispensable. [[emailprotected] ~]# grep -n ‘g.*g‘ regular_express.txt1:"Open Source" is a good mechanism to develop programs.14:The gd software is a

What can a scripting language do? Let's talk about ant, Maven, And Gant.

the project to a certain extent. Maven is a software project management tool based on the project Object Model (POM). You can use a short description to manage project construction, reports, and documents. So strictly speaking, Maven has long gone beyond the concept of scripting language and is a tool that truly applies to engineering and project management. Http://maven.apache.org/ Using the example on the official website, we can see that getting started is also very simple. In the future, I

Linux Command--grep | Regular expressions

characters", "o*" stands for "having empty bytes or an O or more bytes", so "Grep-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 grep command for Linux

the meaning of "repeating 0 or more of the preceding RE characters", "o*" stands for "having empty bytes or an O or more bytes", so "Grep-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 b

The grep command for Linux

-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

SQL with (recursive CTE query)

) + ' | ' + FirstName + ' + LastName) from HumanResources.Employee as e joins Person.Contact as C on e.contactid = C.contactid JOIN directreports as D on e.managerid = D.employeeid ) SELECT EmployeeID, Name, Title, Employeeleve Lfrom directreports ORDER by Sort; GOG. Using Maxrecursion to cancel a statementCan be used MAXRECURSION to prevent unreasonable recursive CTE from entering an infinite loop. The following example

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