Merge pull request #94 from fmunch/uname

Added uname cheatsheet

cheatsheets/uname

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+# Print all system information
+uname -a
+# Linux system-hostname 3.2.0-4-amd64 #1 SMP Debian 3.2.32-1 x86_64 GNU/Linux
+
+# Print the hostname
+uname -n
+# system-hostname
+
+# Print the kernel release
+uname -r
+# 3.2.0-4-amd64
+
+# Print the kernel version, with more specific information
+uname -v
+# #1 SMP Debian 3.2.32-1
+
+# Print the hardware instruction set
+uname -m
+# x86_64
+
+# Print the kernel name
+uname -s
+# Linux
+
+# Print the operating system
+uname -o
+# GNU/Linux