The printf command offers well-defined behavior following the POSIX standard, which means it works the same way across shells ...

Bash functions are essentially reusable wrappers around commands. You can use them to define complex command pipelines or to perform some detailed work and echo the result. They accept arguments and ...

It also saves a log in the same location as the backup file, including: Logging the start and end time plus how long the backup took. Logging every file that was ...

Abstract: A design of a floating focusing system based on polymer films is proposed, in which water is the material for making the lens. This makes it possible to implement a focusing system of high ...