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unix - uniprocessor or multiprocessor

On unix, how could we know whether the system is multiprocessor or uniprocessor?

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Some times we have to answer owr own question :)

On Solaris run the command

/usr/sbin/psrinfo -v|grep "Status of processor"|wc -l

On AIX run the command

lsdev -C|grep Process|wc -l

On HP-UX run the following commands (requires superuser privileges):

P=`echo processor_count/D | adb -k /stand/vmunix /dev/mem |tail -1|awk '{print $2}'` echo "The number of processors on `hostname` = $P"

On Tru64 run the command

 /usr/sbin/psrinfo -v|grep "Status of processor"|wc -l

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