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In Linux, which of these is contained in the /etc directory?
chmod
tty
X11
vmlinuz
X11 is located under /etc, while chmod is under /bin, tty is under /dev and vmlinuz is under /boot.
The X Window System (X11, or simply X) is a windowing system for bitmap displays, common on Unix-like operating systems.
X provides the basic framework for a GUI environment: drawing and moving windows on the display device and interacting with a mouse and keyboard. X does not mandate the user interface – this is handled by individual programs. As such, the visual styling of X-based environments varies greatly; different programs may present radically different interfaces.
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