Debian/Ubuntu Linux: bash: mail command not found – Solution
In Linux operating system, the following error may occur when running mail command to access a mailbox, maildir, mail file:
How to fix Invalid command ProxyRequests
Invalid command ‘ProxyRequests’ error occurs in Linux server due to missing apache modules in our Linux server. To fix this
How to fix Invalid command ‘RequestHeader’ in the server configuration
Invalid command ‘RequestHeader’ error occurs in Linux server due to missing apache modules in our Linux server. To fix this
![PHP Interview Questions [1 – 10]](https://www.gtechhub.com/blog/wp-content/uploads/2020/06/flat550x550075f-1-458x480-1.jpg)
PHP Interview Questions [1 – 15] you should know
Given below is the list of most popular PHP interview questions which are commonly asked in the interviews. PHP Interview
How to Generate random number in Linux
How to generate random number in Linux? You can easily generate random numbers with the custom limit range by using
Delete / Remove User account in Linux – userdel
How do I delete / remove user account from my server? How do I delete a user account under Linux
PHP add days to current date
PHP add days to the current date is very easy and follows this article. I will guide you to add
mysql_num_rows – Get number of rows in MySQL result handle
Get number of rows in MySQL result handle, follow the simple process mentioned below. The mysql_num_rows() function returns the number
How to remove / Uninstall postfix from Ubuntu
Postfix is a free and open-source mail transfer agent that routes and delivers electronic mail. To remove postfix package completely
How to enable / disable / deactivate user account in Samba server – smbpasswd
Samba server is a free software of Server Message Block networking protocol. Mainly used for sharing files and print services
PHP: How to copy all files from one directory to another
I will guide you to copy all files & sub directories of the directory to another directory using PHP copy()
How to move a file in Perl (File::Copy)
How to move a file in Perl? Methods “move” or “mv” implemented in the module “File::Copy” can be used. Both
Debian/Ubuntu: How To Start / Stop / Restart Apache Server
Apache server is an open-source and cross-platform HTTP server, primarily used to serve both static content and dynamic Web pages
PHP: Create JSON String from Array / Object – json_encode()
json_encode() function is an inbuilt PHP function which is used to convert PHP array or object into JSON representation. Encoding is used
How to fix “Invalid command ‘AuthGroupFile'” not included in the server configuration
I’ve noticed the following error while creating .htaccess file for my test domain. If you are getting the same issue,
