The AT Emulator can emulate a communication device, like a modem. The AT interface can be accessed through the console, a TCP or telnet connection or a virtual COM port.

This simple project shows how to build an Android App Bundle (AAB) using the command line tools only, without any IDE.

How to build an Android APK from the command line, without IDE

A "Thread pool"-like implementation in Bash, using a FIFO file

Lightweight Java library to interact with external devices over COM ports, for example: USB, virtual COM. It can be used to interact with TTY and FIFO files as well. No external dependencies. Native drivers are included for 32-bit and 64-bit Windows and Linux. A pure Java driver is available as a fallback for other OS and architectures.