Recipe: Internal Field separators and iterators


Read CSV
========
$ data="name,sex,rollno,location"
$ oldIFS=$IFS
$ IFS=, ;
$ now,
$ for item in data;
> do
> echo Item: $item
> done

Item: name
Item: sex
Item: rollno
Item: location


for loop
========
for var in list;
do
	commands; # use $var
done

for((i=0;i<10;i++))
{
	commands; # Use $i
}

while loop
==========
while condition
do
	commands;
done

until loop
==========
x=0;
until [ $x -eq 9 ]; # [ $x -eq 9 ] is the condition
do let x++; echo $x;
done


Scripts
=======
read_csv.sh