to convert string to integer value

[justsomerat]

How to compare a number stored as string to an integer value in shell scripting? Here is what I have,

if [$temp -ge 2.5] then;

when I run the above code, it gives the error as "Integer Expression expected".
Here the temp variable contains the number "3.0" as a string, I want to compare the value of temp is greater or equal to the number 2.5.
How can I do it.

Please reply soon.

Thanks in advance.

Shiva

[shanenin]

an interger is a whole number, with no decimal point. That is why it is telling you an integer is expected.

either the number 2.5 or 3.0 will cause it to fail.

[Cosla]

Does any one have the pseudocode for this problem?? If you do plaz contact me

Thanx

[vartotojas]

Here's some code for C# that works:

You can use doubles to hold numbers with decimal places.

if [$temp.convert.todouble() -ge 2.5] then;

that should solve your problem.

[mittelgeek]

Try putting quotes around 2.5 and $temp like so:

if ["$temp" -ge "2.5"] then;

otherwise set a variable equal to 2.5 and test that:

SOME_VALUE=2.5
if [$temp -ge $SOME_VAULE] then;

This may require quotes too so...

These suggestions are based on BASH shell scripting which is what this kind of looks like, so your mileage may vary...