Linux

What is wimax

Worldwide interoperability for microwave access

What is WiMAX? WiMAX is, Worldwide Interoperability for Microwave Access, a technology standard that enables high speed wireless internet. In other words, WiMAX combines the high speed of a broadband connection with the convenience of mobile internet connectivity. WiMAX provides wireless broadband access up to a radius of 50 kilometers  ..

Emacs editor available in unix commands

How to use emac

What is Emacs? Emacs is another editor available in UNIX. Like vi, emacs is a screen editor. Unlike vi, emacs is not an insertion mode editor, meaning that any character typed in emacs is automatically inserted into the file, unless it includes a command prefix. Commands in emacs are either control  ..

Change the default language to utf 8

How to change default language in linux

To find the language set in your linux machine use the below command echo $LANG To change the value of $LANG variable to utf-8 just follow below step export LANG="en_GB.UTF-8"   ..

Find default language set in linux machine

Change the default language to utf-8

To find the language set in your linux machine use the below command echo $LANG To change the value of $LANG variable to utf-8 just follow below step export LANG="en_GB.UTF-8"   ..

Implementation of levenshtein distance algorithm java program

Java programming

public class Distance { //**************************** // Get minimum of three values //**************************** private int Minimum (int a, int b, int c) { int mi; mi = a; if (b < mi) { mi = b; } if (c < mi) { mi = c; } return mi; } //***************************** // Compute Levenshtein distance //***************************** public int LD (String s, String t) { int d[][]; // matrix int n; // length  ..

Rename jpg to jpg recursively

Find and move the file

Recursively rename .JPG to .jpg using standard find and mv command. find /path/to/images -name '*.JPG' -exec bash -c 'mv "$1" "${1/%.JPG/.jpg}"' -- {} \; The above command will find all the JPG file and rename it to .jpg file. Here the find command is used to find the JPG file and  ..

Mvc architecture model view controller

Basics of MVC Architecture

MVC Architecture The main aim of the MVC architecture is to separate the business logic and application data from the presentation data to the user. Here are the reasons why we should use the MVC design pattern. 1. They are resuable : When the problems recurs, there is no need to invent  ..

Execute php script every 30 minutes

Cron job for every 30 minutes

Execute a PHP script every 30 minutes using crontab 0,30 * * * * php -q /address/to/script.php Just put this line in a file that resides in your /etc/cron.d/ folder, and you're set. The script.php file will execute once for every 30 minutes.   ..

Prints line numbers using grep command

Count line using grep command

You can get line number's of a file using grep command. Syntax grep -n "^" <filename> Example grep -n "^" tags.txt OUTPUT 1:<html> 2:<head> </head> 3:<title> </title> 4:<body> 5:</body> 6: 7:</html> The above command will also count the blank lines and prints the result as above.   ..

Print path with one line per entry

Echo PATH of your system

We use to print the PATH of our linux machine by using the echo $PATH command. How to find the PATH echo $PATH OUTPUT: /usr/lib/qt-3.3/bin:/usr/kerberos/bin:/usr/lib/ccache:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/patel/bin This kind of output will not be legible to read of find the path. How to print PATH with one line per entry echo -e ${PATH//:/\\n} OUTPUT:   ..

Preventing logins to a chosen session

Session fixation attacks

There is one common denominator to all session fixation attacks and scenarios: The user logs in to a session with an attacker-chosen ID, instead of having been issued a newly generated session ID by the server. Since there seems to be no compelling reason for web applications to explicitly allow  ..

Create admin account using ncli

Size of JVM assigned for a reseller

Before Creating Account Admin ,decide the following : 1) No.of User the reseller can create under his control 2) Size of JVM to be assigned to a reseller ( This JVM can be split and given to users under him) When the above things are decided then login into server through  ..

Error unable to login plesk after upgrading

Disable SSO Single Sign On

Error: Unable to login to Plesk after upgrading from 9.0 to 9.0.1 Solution: 1. Login to the server through SSH. 2. Execute the following command to disable SSO [Single Sign-On]. /usr/local/psa/bin/sso -disable Now you can access Plesk without any issue.   ..

External projector for presentations

Xrandr command

This command will help you to use the projector for external presentation. xrandr --auto The above command will accept the projector automatically.   ..

Gmail keyboard shortcuts

Say no to mouse

Gmail Keyboard Shortcuts: => C: Compose new message. => Shift + C: Open new window to compose new message. => Slash (/): Switch focus to search box. => K: Switch focus to the next most recent email. Enter or "O" opens focused email. => J: Switch focus to the next oldest email. => N: Switch focus  ..

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