Month: April 2020

The alias command assigns a command or set of commands to a string. Aliases are generally used to simply typing a long command or to execute an option to a…

When using ssh, if you get the following message, do not panic. Chances are nothing nasty has happened. This means that the public key of the host has changed and…

The is_dir() function in PHP allows users to check whether a file is a directory. It returns true if the file is a directory. However, the addresses provided must be…

For security reasons, most servers on the Internet do not show the contents of a directory if the directory address is typed. The user is either redirected to index.whatever, a…

The crypt() function provide one-way encryption. Using one-way encryption is like using a key to lock and unlock something. The key is your password. To encrypt: To decrypt:

Opening directory and listing files See the following code: output: To remove certain file name from the list, see the following code: This code lists all files except the ones…

This article shows some techniques of manipulating data in an array. To keep it simple, let’s start by looking how we can remove quotes from a variable. To remove a…

rsync is a very useful alternative to rcp and scp. It tool lets you copy files and directories between a local host and a remote host. The main advantage of…

Since PHP array are indexed from 0, the last element at any given time has the index count of array minus one. Following is a code example: The output of…

In PHP, all commandline parameter are passed to the $argv array. Following example shows how to use this array: $argv[1] and $argv[2] contain the passed parameters in the order they…