During a post-migration audit you are writing a shell script that must record only the kernel name, kernel release, machine hardware name, and operating system string of the current GNU/Linux host. Nothing else may be included in the output line. Which single command satisfies the requirement?
uname -a
uname -srmo
uname -srm
uname -nrv
The option flags for uname can be combined. -s prints the kernel name, -r prints the kernel release, -m prints the machine's hardware name, and -o prints the operating-system name. Running uname -srmo therefore returns exactly those four required fields and no additional data. uname -a prints extra items such as the node name and kernel version; uname -nrv omits the machine hardware name and operating system; uname -srm omits the operating-system field.
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