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Arithmetic In UNIX

 
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# 1  
Old 11-23-2005
Arithmetic In UNIX
I am a beginner and I have been searching the web all morning for this answer but can't find it anywhere.

I know that

prtint 1*2

will return
1*2

what if i actually want the problem to be calculated

so i want

print 1*2

to return
2

How is this done?
# 2  
Old 11-23-2005
echo '1 * 2' | bc
# 3  
Old 11-23-2005
For smaller numbers, this would do

Code:
[tmp]$ echo $((4*2))
8

# 4  
Old 11-23-2005
Search for let command. The let command can performs both arithmetic and logic operations.

Code:
# let "A=1*2"
# echo $A
# 2

See : http://www.unix.org.ua/orelly/unix/unixnut/ch04_04.htm
Last edited by qfwfq; 11-23-2005 at 05:52 PM..
 
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