Round with division command - Shell Programming and Scripting

vanloonmichel · #1 (**permalink**) 02-15-2007

Hi I want to create a list of percentages but the shell script is bugging me.

If if I want to resolve the percentage of the quota used I get 0 because the schell script rounds by default.

Example

Code:

w1=860
w2=1024
w3=$((($w1/$w2)*100))

Echo $w3 gives 0

When I divide w1 by w2 the result is 0,83!

Can somebody help me?

anbu23 · #2 (**permalink**) 02-15-2007

Code:

w3=$( echo "scale=6; ( $w1 / $w2 ) * 100" | bc )

matrixmadhan · #3 (**permalink**) 02-15-2007

some scale

Code:

c=`echo "scale=6; $a / $b" | bc`

vanloonmichel · #4 (**permalink**) 02-15-2007

Hi when i use w3=$( echo "scale=6; ( $w1 / $w2 ) * 100" | bc )

I get the error Command not found

matrixmadhan · #5 (**permalink**) 02-15-2007

check whether the directory in which bc lives is in the $PATH

usually it should be as

/usr/bin/bc

vanloonmichel · #6 (**permalink**) 02-15-2007

bc is not located in the usr/bin folder. Is there an easy way to locate the command so I can put it in the path?

matrixmadhan · #7 (**permalink**) 02-15-2007

Could you please let us know the operating system that you are using ?

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