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linux ..what does it mean?
In Linux.
represents your current directory, which is the directory returned by the "pwd" command,
In Linux..
Represents the upper-level directory of your current directory and the parent directory (or parent path) of the current directory
For example: cd .. means going back to the previous level; cd ../.. means going back Go two levels up.
Related recommendations: "Linux Tutorial"
Related introduction:
Linux is a set of Unix-like operating systems that are free to use and freely disseminated. A multi-user, multi-tasking, multi-threading and multi-CPU operating system based on POSIX and Unix. It can run major Unix software tools, applications and network protocols. It supports 32-bit and 64-bit hardware. Linux inherits the network-centric design philosophy of Unix and is a multi-user network operating system with stable performance.
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