UNIX for Dummies Questions & Answers

DOMAIN=`uname -n`
cpuload="/users/daniel/cpuload.txt"
usage=`top $DOMAIN | grep idle` >> $cpuload`
usage2=`$cpuload | awk '{print $3}'`
for DOMAIN in ${usage};
do 
 $usage2
 {  
   if[$usage2 <= 40%]; then 
    echo "$DOMAIN Normal $usage2"
   elif [$usage2 -ge 40% && $usage2 -lt 65%] 
    then echo "$DOMAIN Warning $usage2"      
   elif$usage2 -ge 65% && $usage -lt 70%
    then echo "$DOMAIN Major $usage2"
   else         
    echo "$DOMAIN Critical $usage2"   
   fi
 } 
done

elif$usage2 -ge 65 && $usage -lt 70

elif [ $usage2 -ge 65 && $usage -lt 70 ]

VARNUM=60
if [ $VARNUM -le 50% ]; then
  echo less than
elif [ $VARNUM -gt 75% ] ; then 
  echo greater than
else 
  echo in between
fi
bash: [: 50%: integer expression expected
bash: [: 75%: integer expression expected

VARNUM=60
if [ $VARNUM -le 50 ]; then
  echo less than
elif [ $VARNUM -gt 75 ] ; then
  echo greater than
else
  echo in between
fi
in between
#
VARNUM=90
if [ $VARNUM -le 50 ]; then
  echo less than
elif [ $VARNUM -gt 75 ] ; then
  echo greater than
else
 echo in between
fi
greater than
#
VARNUM=40
if [ $VARNUM -le 50 ]; then
  echo less than
elif [ $VARNUM -gt 75 ] ; then
  echo greater than
else
  echo in between
fi
less than

usage=`top | grep idle | cut -b 13-17'
if [$usage -lt 45 ] then
   echo"temp $usage"
fi

$ bash
$ a=3.5
$ b=2.3
$ if [ $a -gt $b ]
> then
>  echo $a is greater than $b
> fi
bash: [: 3.5: integer expression expected
$ ksh93
$ a=3.5
$ b=2.3
$ if [ $a -gt $b ]
> then
>  echo $a is greater than $b
> fi
3.5 is greater than 2.3
$