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×÷Õß: xcsars    •r(sh¨ª)ég: 2009-03-04 19:34
˜Ë(bi¨¡o)î}: †–‚€(g¨¨)¸¡üc(di¨£n)”µ(sh¨´)ºÍÕû”µ(sh¨´)Ó‹(j¨¬)ËãµÄ†–î}
MEMS=`lsattr -El mem0|head -n 2|tail -n 1|awk '{printf $2}'`    «@µÃϵ½y(t¨¯ng)ƒÈ(n¨¨i)´æ

FREEMEMS=`vmstat 2 10 |egrep -v "cpu|---|wa" |awk '{if(NR==1) continue;free += $4;} END{printf("%.2lf\n",free/(NR-1)*4/1024);}'`   «@µÃ®”(d¨¡ng)ǰϵ½y(t¨¯ng)ÖÐfreeµÄƒÈ(n¨¨i)´æ

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USEDMEMS=$FREEMEMS/$MEMS*100    ÎÒÊÇß@˜ÓŒ‘µÄ µ«ÊDz»ÐÐ

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×÷Õß: dream3401    •r(sh¨ª)ég: 2009-03-04 19:42
Èç¹ûÓÐbcµÄÔ’¿ÉÒÔß@˜Ó:
Lsir:/tmp# a=5 b=6
Lsir:/tmp# c=$(echo "scale=5;$a/$b*100"|bc)    (×¢:Èç¹û±£ÁôƒÉλ¿ÉÒÔscale=2)
Lsir:/tmp# echo $c
83.33300
Èç¹ûÓÐperlÒ²¿ÉÒÔ c=$(perl -e "printf '%.2f',$a/$b*100;")

[ ±¾Ìû×îºóÓÉ dream3401 ÓÚ 2009-3-4 20:17 ¾ŽÝ‹ ]
×÷Õß: ÎÒÊÇDBA    •r(sh¨ª)ég: 2009-03-04 20:10
[root@erpdataserver ~]# MEMS=124
[root@erpdataserver ~]# FREEMEMS=4623
[root@erpdataserver ~]# echo "$FREEMEMS/$MEMS*100"|bc
3700
[root@erpdataserver ~]# USEDMEMS=`echo "$FREEMEMS/$MEMS*100"|bc`
[root@erpdataserver ~]# echo $(($FREEMEMS/$MEMS*100))
3700
×÷Õß: ïwø™Ÿo(w¨²)ºÛ    •r(sh¨ª)ég: 2009-03-04 21:41
Ô­ÌûÓÉ ÎÒÊÇDBA ÓÚ 2009-3-4 20:10 °l(f¨¡)±í
[root@erpdataserver ~]# MEMS=124
[root@erpdataserver ~]# FREEMEMS=4623
[root@erpdataserver ~]# echo "$FREEMEMS/$MEMS*100"|bc
3700
[root@erpdataserver ~]# USEDMEMS=`echo "$FREEMEMS/$MEMS*100"| ...

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