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Shell Programming and Scripting

Round with division command

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# 1  
Old 02-15-2007
Round with division command
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?
# 2  
Old 02-15-2007
Code:
w3=$( echo "scale=6; ( $w1 / $w2 ) * 100" | bc )

# 3  
Old 02-15-2007
some scale

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

# 4  
Old 02-15-2007
bc | command not found
Hi when i use w3=$( echo "scale=6; ( $w1 / $w2 ) * 100" | bc )

I get the error Command not found
# 5  
Old 02-15-2007
check whether the directory in which bc lives is in the $PATH

usually it should be as

/usr/bin/bc
# 6  
Old 02-15-2007
Locate bc
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?
# 7  
Old 02-15-2007
Could you please let us know the operating system that you are using ? Smilie
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