Shell Programming and Scripting

 
swapinfo -tam | grep "memory"
memory         4876        2703         2173   55%

 CHECK="`swapinfo -tam | grep "memory"`
 
echo $CHECK | awk '{print $5}'
 
 SPACE="`echo $CHECK | awk '{print $5}'`"
echo $SPACE

cat test_memory.ksh
CHECK=`swapinfo -tam | awk '/memory/ {print $5}'`
THD=80
if [[ $CHECK -gt $THD ]]
then
 echo "Memory is HIGHER than 80%"
else
 echo "Memory usage is fine."
fi

[ 55% -gt 70 ]
[[ 55% -gt 70 ]]
test 55% -gt 70

CHECK=$(swapinfo -tam | awk '/memory/ {print substr($5, 1, length($5) - 1)}')
THD=70
if [ $CHECK -gt $THD ]
then	echo "Memory usage is HIGHER than 70%"
else	echo "Memory usage is fine."
fi