Linux alias command
The alias command assigns a command or set of commands to a string. Aliases are generally used to simply typing…
SSH – Warning: remote host identification has changed
When using ssh, if you get the following message, do not panic. Chances are nothing nasty has happened. This means…
is_dir not working
The is_dir() function in PHP allows users to check whether a file is a directory. It returns true if the…
PHP: Display directory contents
For security reasons, most servers on the Internet do not show the contents of a directory if the directory address…
PHP: Encrypting and Decrypting
The crypt() function provide one-way encryption. Using one-way encryption is like using a key to lock and unlock something. The…
PHP: File functions
Opening directory and listing files See the following code: output: To remove certain file name from the list, see the…
Removing quotes – a step by step example of manipulating array data
This article shows some techniques of manipulating data in an array. To keep it simple, let’s start by looking how…
rsync command
rsync is a very useful alternative to rcp and scp. It tool lets you copy files and directories between a…
PHP: How to access last element in an array
Since PHP array are indexed from 0, the last element at any given time has the index count of array…
PHP: How to read command-line input
In PHP, all commandline parameter are passed to the $argv array. Following example shows how to use this array: $argv[1]…