bc cammand in UNIX

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# 1  
Old 07-30-2001
bc cammand in UNIX

Can some one please explain the correct syntax of the bc command to me. The UNIX man bc does not show you much.

# 2  
Old 07-30-2001
I'm not really sure what you're asking for here, because the man page on the bc command is fairly extensive. There are many options to choose from and the man page does a fairly good job of explaining them and what the command actually does.
# 3  
Old 07-30-2001
In a script I am grepping for two values and put them in seperate files. In this same script I want to do a calculation. This is the part that I struggle with : ***part of the script*****

NUM1=`cat /app/temp/file1.txt`
echo $NUM1 **value is 198.3**
NUM2=`cat /app/temp/file2.txt`
echo $NUM2 **value is 68.2**

TOT=`echo "$NUM1" / "$NUM2" | bc`
echo $TOT

Now, when using bc like this in the same script, it will trow away all numbers after the decimal sign. This is not what i need it to do.


Smilie Smilie
# 4  
Old 07-30-2001
Bug Solution

in bc command, there is a variable called "scale", which is
number of digits right of decimal point.

#x=$(printf "%s\n" "scale = 10; `echo $x1`/`echo $x2`" |bc)

it works. : )
# 5  
Old 07-30-2001
thanks a lot......it works 100%......

can you explain the command a bit to me please......Smilie
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