AIX

#!/usr/bin/ksh
#memory calculator
um=`svmon -G | tail -1 | awk {'print $3'}`
((um=um / 256))
tm=`lsattr -El sys0 -a realmem | awk {'print $2'}`
((tm=tm / 1000))
((fm=tm - um))
echo "\n\n-----------------------";
echo "System : (`hostname`)";
echo "-----------------------\n\n";

echo "\n\n-----------------------";
echo " Users Login information \n";

for ENTRY in `finger | cut -d " " -f1 | grep -v Login | uniq`
do
echo "`finger -l $ENTRY | head -1 | cut -d \" \" -f14` --->  `finger -l $ENTRY | awk '{ print $2 }' | tail -2 | head -1`";
#finger -l $ENTRY | awk '{ print $2 }' | tail -2 | head -1;
done
echo "-----------------------\n";

echo "\n----------------------";
echo "Memory Information\n\n";
echo "total memory = ${tm}MB"
echo "free  memory = ${fm}MB"
echo "used  memory = ${um}MB"
echo "\n\n-----------------------\n";

# lsattr -El mem0
goodsize 16384 Amount of usable physical memory in Mbytes False
size     16384 Total amount of physical memory in Mbytes  False
# vmstat -v
              4194304 memory pages
              3977913 lruable pages
                19249 free pages
                    2 memory pools
               785742 pinned pages
                 80.0 maxpin percentage
                 20.0 minperm percentage
                 80.0 maxperm percentage
                 55.5 numperm percentage
              2210872 file pages
                  0.0 compressed percentage
                    0 compressed pages
                 55.5 numclient percentage
                 80.0 maxclient percentage
              2210872 client pages
                    0 remote pageouts scheduled
                 2422 pending disk I/Os blocked with no pbuf
              4976055 paging space I/Os blocked with no psbuf
                 2484 filesystem I/Os blocked with no fsbuf
                 8021 client filesystem I/Os blocked with no fsbuf
               101407 external pager filesystem I/Os blocked with no fsbuf
                    0 Virtualized Partition Memory Page Faults
                 0.00 Time resolving virtualized partition memory page faults