Move pages under tldr, lint run.sh, update docs

tldr/uname

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# uname
+
+> Print details about the current machine and the operating system running on it.
+> See also `lsb_release`.
+> More information: <https://www.gnu.org/software/coreutils/uname>.
+
+- Print kernel name:
+
+`uname`
+
+- Print system architecture and processor information:
+
+`uname --machine --processor`
+
+- Print kernel name, kernel release and kernel version:
+
+`uname --kernel-name --kernel-release --kernel-version`
+
+- Print system hostname:
+
+`uname --nodename`
+
+- Print all available system information:
+
+`uname --all`