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that the content of D: \ abc.txt is as follows:Name, gender, age, etc.-levelMichael Zhang 36 A-1Li Si Men 29 B-2 Zhao liunv31 A-2 Run the following command:For/F % C in (D: \ abc.txt) Do @ echo % CThe screen is displayed as follows:NameZhang SanLi SiZhao Liu Explanation: This is the default parameter option for/R before "% variable". In the loop, each wheel is separated by space by default and segmented to strings line by line in the open file, because no additional variable (that is, only one

;>%computername%.txt if!tee! = = 5 echo RAM Size =%%b>>%computername%.txt if!tee! = = 6 Echo.>>%computerName%.txt if!tee! = = 6 Echo displaycard: >>%computername%.txt if!tee! = = 6 echo Display Card =%%b>>%computername%.txt if!tee! = = 7 Echo displaymemory =%%b>>%computername%.txt)) Else (ping/n 2 127.1>nul goto system) Set Tee =0echo.>>%computername%.txtecho mother board:>>%computername%.txtfor/f "tokens=1,* delims=="%%a in (' WMIC baseboard g

access token-based authenticationAdd Refresh token supportImplementing access tokens through User password modeImplement client mode get access TokenOn. The encryption instructions for OAuth-related tokens in net　　Note: This chapter content source code download:https://files.cnblogs.com/files/selimsong/OAuth2Demo.zipOAuth2.0 IntroductionAt the beginning of the article, it was said that the increasingly ric

Evaluate the value of an arithmetic expression in Reverse Polish Notation.Valid operators is + , - , * , / . Each operand is an integer or another expression.Some Examples: ["2", "1", "+", "3", "*")--((2 + 1) (3)-9 ["4", "", "5", "/", "+"], 4 + (13/5))is to reverse the result of the Polish expression (subsequent traversal).1, direct solution, very slow Public classSolution { Public intEVALRPN (string[] tokens) {intLen =tokens.length; if(len = = 0)

Redis server time * * private Val Now get () = Permitstemplate.execute {it.time ()}?: System.currenttimemillis () Putdefaultpermits is used to generate the default token bucket and deposit in RedisPermits Getter Setter Method realizes the acquisition and update of the token bucket in RedisNow is used to get the time of the Redis server, which ensures the consistency of data processing among the nodes in the distributed cluster Private Fun Reserveandgetwaitlength (Tokens:long): Long { val

token bucket algorithm (token bucket algorithm) When implementing a QoS policy, the user's data can be limited to a specific bandwidth, and when the user's traffic exceeds the rated bandwidth, the excess bandwidth is handled in other ways. To measure whether the traffic exceeds the rated bandwidth, network equipment is not a simple digital plus subtraction to determine, that is, such as the bandwidth of 100K, and the user sent the traffic is 110K, network equipment is not by 110K minus 100K equ

Evaluate the value of an arithmetic expression in Reverse Polish Notation.Valid operators is + , - , * , / . Each operand is an integer or another expression.Some Examples: ["2", "1", "+", "3", "*")--((2 + 1) (3)-9 ["4", "", "5", "/", "+"], 4 + (13/5))Inverse Polish expression is to put the operand in front, put the operator behind a notation, we can see that the first occurrence of the operator, before it must have two numbers, when the operator and the previous two numbers after the completi

Tokens are the way in which values are defined in a blockchain to demarcate financial or digital assets. In Ethereum, tokens use the same standards, which makes it easy to exchange and DAPP support between tokens. What is the ERC20 standard The ERC-20 standard, introduced in November 2015, uses tokens of this rule to

]# LLTotal 0-rw-r--r--1 root root 0 Mar 10:36 network-1-rw-r--r--1 root root 0 Mar 10:36 network-10-rw-r--r--1 root root 0 Mar 10:36 network-2-rw-r--r--1 root root 0 Mar 10:36 network-3-rw-r--r--1 root root 0 Mar 10:36 network-4-rw-r--r--1 root root 0 Mar 10:36 network-5-rw-r--r--1 root root 0 Mar 10:36 network-6-rw-r--r--1 root root 0 Mar 10:36 network-7-rw-r--r--1 root root 0 Mar 10:36 network-8-rw-r--r--1 root root 0 Mar 10:36 network-95, Batch create 10 system account test01,test02,... test1

Requirement: create 10 SYSTEM account oldboy01-oldboy10 in batches and set to generate password (different password ). Implementation script: #!/bin/bash#Question3foriin$(seq-w10)douseradd-s/bin/basholdboy$iecho"password$i"|md5sum|tee-apasswd.txt|passwd--stdinoldboy$idone Script Execution result: [[Email protected] Q4] # sh q4.shchanging password for user oldboy01.passwd: All authentication tokens updated successfully. changing password for user old

This article mainly introduces the jQuery selector source code explanation (5): The tokenize parsing process. This article uses a detailed comment to explain the parsing process of the tokenize method, need a friend can refer to the following analysis based on jQuery-1.10.2.js version. $ ("P: not (. class: contain ('span '): eq (3) ") is used as an example to explain how tokenize and preFilter complete parsing. For more information about each line of code in the tokenize method and preFilter cl

total for/l % I in (, 5) do rd/q % I -- delete from 1 ~ 5. Five folders in total. 4. parameters/F (Use File Parsing to process command output, strings, and file content .) --- This parameter is the most difficult and has many parameters. The for command can be used to analyze the file content, string content, or the output result of a command, set the option to get the expected result. The following is an explanation from a professional who feels a little too professional and thinks it is not e

the For loop. By default,/F is separated from each row of each file The first blank symbol. Skips blank lines. You can specify optional "options" by specifying Parameter overrides the default resolution operation. This quoted string consists of one or more Specifies keywords for different resolution options. The key words are: Eol=c-refers to the end of a line comment character (just one) Skip=n-refers to the number of rows ignored at the start of the file. Delims=xxx-refers to the delimiter s