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Author: Gowri Shankar Balasubramaniam

How to Generate random number in Linux
Linux

Debian/Ubuntu Linux: bash: mail command not found – Solution

  • Gowri Shankar Balasubramaniam
  • Posted on August 15, 2020

In Linux operating system, the following error may occur when running mail command to access a mailbox, maildir, mail file:

Read More “Debian/Ubuntu Linux: bash: mail command not found – Solution”
Apache HTTP Server
Apache

How to fix Invalid command ProxyRequests

  • Gowri Shankar Balasubramaniam
  • Posted on July 16, 2020

Invalid command ‘ProxyRequests’ error occurs in Linux server due to missing apache modules in our Linux server. To fix this

Read More “How to fix Invalid command ProxyRequests”
Apache HTTP Server
Apache

How to fix Invalid command ‘RequestHeader’ in the server configuration

  • Gowri Shankar Balasubramaniam
  • Posted on July 15, 2020

Invalid command ‘RequestHeader’ error occurs in Linux server due to missing apache modules in our Linux server. To fix this

Read More “How to fix Invalid command ‘RequestHeader’ in the server configuration”
PHP Interview Questions [1 – 10]
Interview Questions and Answers

PHP Interview Questions [1 – 15] you should know

  • Gowri Shankar Balasubramaniam
  • Posted on June 1, 2020

Given below is the list of most popular PHP interview questions which are commonly asked in the interviews. PHP Interview

Read More “PHP Interview Questions [1 – 15] you should know”
How to Generate random number in Linux
Linux

How to Generate random number in Linux

  • Gowri Shankar Balasubramaniam
  • Posted on May 28, 2020

How to generate random number in Linux? You can easily generate random numbers with the custom limit range by using

Read More “How to Generate random number in Linux”
Ubuntu Clean up “No Longer Required Packages”
Linux

Delete / Remove User account in Linux – userdel

  • Gowri Shankar Balasubramaniam
  • Posted on May 25, 2020

How do I delete / remove user account from my server? How do I delete a user account under Linux

Read More “Delete / Remove User account in Linux – userdel”
Generating Random String Using PHP
PHP

PHP add days to current date

  • Gowri Shankar Balasubramaniam
  • Posted on May 20, 2020

PHP add days to the current date is very easy and follows this article. I will guide you to add

Read More “PHP add days to current date”
mysql_num_rows - Get number of rows in MySQL result handle
PHP

mysql_num_rows – Get number of rows in MySQL result handle

  • Gowri Shankar Balasubramaniam
  • Posted on May 14, 2020

Get number of rows in MySQL result handle, follow the simple process mentioned below. The mysql_num_rows() function returns the number

Read More “mysql_num_rows – Get number of rows in MySQL result handle”
Ubuntu upgrade / update package patch using apt-get install
Linux

How to remove / Uninstall postfix from Ubuntu

  • Gowri Shankar Balasubramaniam
  • Posted on May 13, 2020

Postfix is a free and open-source mail transfer agent that routes and delivers electronic mail. To remove postfix package completely

Read More “How to remove / Uninstall postfix from Ubuntu”
How to disable / deactivate user account in Samba server – smbpasswd
Linux

How to enable / disable / deactivate user account in Samba server – smbpasswd

  • Gowri Shankar Balasubramaniam
  • Posted on May 13, 2020

Samba server is a free software of Server Message Block networking protocol. Mainly used for sharing files and print services

Read More “How to enable / disable / deactivate user account in Samba server – smbpasswd”
Generating Random String Using PHP
PHP

PHP: How to copy all files from one directory to another

  • Gowri Shankar Balasubramaniam
  • Posted on May 7, 2020

I will guide you to copy all files & sub directories of the directory to another directory using PHP copy()

Read More “PHP: How to copy all files from one directory to another”
perl programming language
PERL

How to move a file in Perl (File::Copy)

  • Gowri Shankar Balasubramaniam
  • Posted on May 7, 2020

How to move a file in Perl? Methods “move” or “mv” implemented in the module “File::Copy” can be used. Both

Read More “How to move a file in Perl (File::Copy)”
Ubuntu upgrade / update package patch using apt-get install
Apache

Debian/Ubuntu: How To Start / Stop / Restart Apache Server

  • Gowri Shankar Balasubramaniam
  • Posted on May 6, 2020

Apache server is an open-source and cross-platform HTTP server, primarily used to serve both static content and dynamic Web pages

Read More “Debian/Ubuntu: How To Start / Stop / Restart Apache Server”
Generating Random String Using PHP
PHP

PHP: Create JSON String from Array / Object – json_encode()

  • Gowri Shankar Balasubramaniam
  • Posted on April 28, 2020

json_encode() function is an inbuilt PHP function which is used to convert PHP array or object into JSON representation. Encoding is used

Read More “PHP: Create JSON String from Array / Object – json_encode()”
Apache HTTP Server
Apache

How to fix “Invalid command ‘AuthGroupFile'” not included in the server configuration

  • Gowri Shankar Balasubramaniam
  • Posted on April 27, 2020

I’ve noticed the following error while creating .htaccess file for my test domain. If you are getting the same issue,

Read More “How to fix “Invalid command ‘AuthGroupFile’” not included in the server configuration”

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