What is sys?

In computing, the term "sys" can refer to a variety of things, depending on the context:

System Files: In some operating systems, particularly older ones like DOS, "SYS" is a common file extension for system files. These files are essential for the booting process and general operation of the operating system.
sys (Python Module): In the Python programming language, sys is a built-in module that provides access to some variables used or maintained by the Python interpreter and to functions that interact with the interpreter. This includes variables like sys.argv, which is a list of command-line arguments passed to a Python script, and functions like sys.exit(), which can stop a program.
System: "Sys" is often used as an abbreviation for "system" in various contexts, such as sysadmin (system administrator), syslog (system logging protocol), etc.
Project or Company Names: "Sys" might also appear as a part of a company or project name, signifying a focus or specialization in systems or systemic solutions.

Understanding the meaning of "sys" often requires additional context to determine what specific aspect of "sys" is applicable.