seeni-dev

if [ 3 -eq 3 -a 3 -ge 2 ]
then
    echo "work begins";
fi

if [ ! 3 -ge 4 ]
then 
    echo "! 3>4";
fi

seeni-dev

i=5;
echo $((1+2));
echo $(($i-3));
echo $((7/2));
echo $((7%5));

seeni-dev

for i in 1 2 3 4 5 6
do
    echo $i;
done

seeni-dev

i=0
while [ $i -lt 10 ]
do
  echo $i;
  i=$((i+1));   #increment the varaible i
done

seeni-dev

if [ $a -eq $b ] # -eq tests whether left operand is equal to the right operand
then
   echo "a is equal to b"
else
   echo "a and b are not equal"
fi

seeni-dev

numberVariable=3;
realVariable=3.14;
stringVariable_1=pi;
stringVariable_2="pi";