uname - -Ofast -march=native
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Linux localhost.localdomain 3.18.0-0.rc3.git2.2.fc22.1.x86_64 #1 SMP Wed Nov 5 18:28:14 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
uname - -Ofast -march=nativeLinux localhost.localdomain 3.18.0-0.rc3.git2.2.fc22.1.x86_64 #1 SMP Wed Nov 5 18:28:14 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux