versacheck checks

CentOS checks whether a software package is installed1. Run rpm-qa to check whether a software package is installed. Run rpm-qa | grep "software or package name ".2. You can use dpkg-l to view the deb package. If you are looking for a specified software package, use dpkg-l | grep "software or package name ";3. You can use the yum list installed method to find the specified package. If you want to find the specified package, add | grep "software name o

JQuery checks the number of input strings in both Chinese and English. Method 1: $ (Document ). ready (function () {var tempStr = "abcdefg we are good kids"; var pattern_char =/[a-zA-Z]/g; var pattern_chin =/[\ u4e00-\ u9fa5]/g; var count_char = tempStr. match (pattern_char ). length; var count_chin = tempStr. match (pattern_chin ). length; alert (count_char + '_' + count_chin); // 7-7 }); Method 2: The above is all the content of this article. I h

Jquery checks whether radio, selelct, and checkbox are selected and obtains the summary of the selected value methods. jqueryselelct Jquery returns the value of the radio button.Copy codeThe Code is as follows:$ ("Input [name = 'items ']: checked"). val ();In addition, determine whether radio is selected and obtain the selected value.As follows:Copy codeThe Code is as follows:Function checkradio (){Var item = $ (": radio: checked ");Var len = item. le

Shell 1 that monitors PHP processes and Error Log checks: When asynchronous processing is performed, it is inevitable that the program will be suspended. This shell can be used to listen to PHP script processes processed by the queue, if the process is dead, it will restart. Www.2cto.com Python code #! /Bin/bash process = 'ps-ef | grep'/www/project/handle. php' | grep-v grep | wc-l 'if [$ process-eq 0]; then/usr/bin/php/www/project/handle. php # You c

JQuery checks whether the array contains the specified element. This article mainly introduces jQuery's method to determine whether an array contains the specified elements. For more information, see To determine whether an array contains an element, the principle is to traverse the entire array and then determine whether it is equal, The Code is as follows: Var arr = ["xml", "html", "css", "js"]; $. InArray ("js", arr); // 3 is returned,

JavaScript checks whether it can connect to a specified server or javascript server.This article describes how to find available addresses from multiple server servlets in js. After a project is deployed in a production environment, there will be a production network segment (that is, you can access it at home) and an office network segment (which can only be accessed at the company ). After our project is deployed, the external system calls our servl

JavaScript checks whether the Sub-string is in the string method, javascript string This example describes how to use JavaScript to check whether a substring is in a string. We will share this with you for your reference. The details are as follows: var strnew="Hello Raghu How are u"//Checking existence in entire stringif(strnew.indexOf("Raghu") != -1 ){ alert("Exists");}/*Checking existence at the end of stringFor example, variable result1 in the fo

Linux regularly checks tomcat status and automatically restarts when it goes down. Put the script directly: #! /Bin/bash # Author: jgd # Date: 2017-09-15 # Automatically detects a tomcat status and restarts when an exception occurs. # ---- Start ---- # Obtain the tomcat process ID and modify it according to your actual situation, such as the port and tomcat name TomcatID = $ (ps-ef | grep tomcat | grep 9085 | grep-w 'apache-tomcat-9.0.0.M21 '| grep-v

Javascript checks whether the flash plug-in is disabled. javascriptflash This article describes how to use javascript to check whether the flash plug-in is disabled. We will share this with you for your reference. The details are as follows: I hope this article will help you design JavaScript programs. Articles you may be interested in: Code of the website flv video playback plug-in based on js and flash JavaScript to detect whether the Flash Play

Introduction: This is a detailed page for PHP to check whether the uploaded file already exists or has the same name. It introduces PHP, PHP, file, path, file PHP checks whether the uploaded file already exists or has the same name related knowledge, skills, experience, and some PHP source code. Class = 'pingjiaf' frameborder = '0' src = 'HTTP: // biancheng.dnbc?info/pingjia.php? Id = 344669 'rolling = 'no'> // Check whether a file with the same n

When registering a user on any website, the system checks whether the user already exists. A long time ago, the processing method was to submit all the data to the server for verification. Obviously, this method had a poor user experience. Later, with Ajax, Asynchronous interaction, when the user enters the user name and continues to fill in other information, Ajax sends the information to the server to check whether the user name has been registered.

VaR textboxs = new array (); // input set of the text type VaR radiolist = new object (); // input set of the radio type. Because radio is special, it requires a group of checks, so a hashtable is used here, use the radio name as the key to save all radio sets. VaR radioes; // The radio set corresponding to each name VaR inputs = myform. getelementsbytagname ("input"); // obtain all input values in Form [Ctrl + A select all Note: If you

, the algorithm execution speed is very slow, and only the 10% player XD is defeated. Because the characters in this string are traversed multiple times. Then I was wondering why I didn't need to traverse it all at once? Because all are uppercase and lowercase, and the first character is uppercase, it can be determined in a traversal. First, set the results to true in all three cases. Then, if any of the three situations does not meet the requirements, set the situation to false and output the t

Checks the network connection of software and windows Network Connection in windows. First, open the task manager and select the application you want to view. Right-click the application and go to the process. The PID of the process is displayed. Open the cmd command line window Enter netstat-ano | findstr 2652 to check the network connection status of the application. What is the exe file used for network connection testing in windows? PING

PHP array_key_exists checks whether the key name or index exists in the array. arraykeyexists Array_key_exists () The PHP array_key_exists () function is used to check whether the given key name or index exists in the array. If yes, TRUE is returned; otherwise, FALSE is returned. Syntax: The bool array_key_exists (mixed key, array search) parameter key is the given key name or index and can be any value that can be used as an array index. The arr

JavaScript checks whether the E-mail address is legal, and uses javascripte-mail

Python checks whether a variable has a defined method. This example describes how to check whether a variable is defined by python. Share it with you for your reference. The details are as follows: The first method uses the built-in function locals (): 'Testvar 'in locals (). keys () The second method uses the built-in function dir (): 'Testvar 'in dir () The third method uses the built-in function vars (): Vars (). has_key ('testvar ') The test is as

Shell script checks the memcache process and automatically restartsRevised version:#! /Bin/sh# Check memcache process and restart if downMm_bin = "/usr/local/bin/memcached"Mm_log = "/home/xxx/memcached_check.log"Mm_ports = ("11211" "11212 ")Mm_param = ("-d-m 20480-p 11211-u www" "-d-m 256-p 11212-u www ")Mm_count =$ {# mm_ports [@]}T = $ (date-d "today" + "% Y-% m-% d % H: % M: % S ")I = 0While [$ I-lt $ mm_count]DoMm_exists = 'ps-ef | grep "memcached

Lt; HTML gt; lt; HEAD gt; lt; TITLE gt; PHP determines whether a file exists lt; TITLE gt; lt; HEAD gt; lt; BODY gt; lt ;? Does the print(data.txt file exist ?. PHP checks whether a file exists Print ("Does the data.txt file exist? "." "); If (file_exists ("data.txt ")) { Print ("This file exists"); // The file exists Print (fileinode ("data.txt ")); } Else { Print ("file does not exist"); // The file does not exist }

This article mainly introduces JQuery's collection of methods to determine whether checkbox is selected and other check box operations. This article summarizes several articles on the Internet to solve this problem. For more information, see I. jquery checks whether the checkbox is selected and changes the checkbox status Jquery has three methods to determine checked: The Code is as follows: . Attr ('checked): // check version 1.6 +. Return Value: "