While working with data filtering, sometimes we may need to check if a string ends with substring. Programming languages provides various methods to do that. A table includes a links...

While working with data filtering, sometimes we may need to check if a string starts with substring. Programming languages provides various methods to do that. A table includes a links...

Working with file system sometimes we need to count all directories in a given directory and subdirectories. Programming languages provides various methods to do that. A table includes a links...

Working with file system sometimes we need to count all files in a given directory and subdirectories. Programming languages provides various methods to do that. A table includes a links...

The php.ini is a configuration file which is read when PHP starts up. This file contains various settings that control the behavior of PHP. The location of the php.ini file...

Tidy is a command line tool that finds and fixes markup errors in HTML documents. This tool also supports pretty printing and fixes basic well-formedness errors in XML documents. This...

Coinmon is a command line tool that allows to check the price of cryptocurrencies. This tool gets data from public API and displays information in the table. This tutorial demonstrates...

The cracklib-check is a command line tool that enables to check password strength. This tool checks whether the password is based on a dictionary word, it is too short, it...

The pwgen is a command line tool that allows to generate random passwords. This tool is designed to generate secure passwords that can be easily memorized by humans. This tutorial...

There is no standard way to determine version of an installed program. Most of the programs allows to check their version via command line with --version option. This post presents...