When working with files in Linux, there might be required to clear the contents of a file without deleting file itself. One way to achieve that would be to open...

In Linux operating system all executed commands are tracked and stored in the history file. It can be used to view and recall the past commands. However, for security reasons...

During installation of libraries and boards platforms, downloaded archive files are placed in the cache. It can speed up workflow when want to reinstall library after removal. Library can be...

Swap memory is a storage space on the disk which is used when there is no RAM space available for programs execution. Can happen that system uses swap memory even...

DNS server translates domain names to specific IP addresses. DNS cache is a temporary storage for storing domain to IP mapping information for recently visited websites. It allows to access...

DNS server is used to translate domain names to specific IP addresses. DNS cache is a temporary storage that contains domain to IP mapping information about websites which recently was...

APT package manager allows to install packages on Debian, and Debian-based Linux distributions. APT store copy of the Debian packages (.deb) in the cache. It helps when want to reinstall...

The pip has a caching mechanism that stores downloaded Python packages and locally built wheels. It allows speeding up package installation process because less amount of time is spent for...

Composer store copies of downloaded PHP packages in the cache. It allows speeding up workflow because for the next time previously installed packages can be retrieved from the cache. Can...

The whowatch is a tool for monitoring users and processes via command line. It shows the currently logged in users and information about them such as login name, home directory...