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Shell Programming and Scripting

Adding Text To |bc Output

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# 1  
Old 04-21-2010
Power Adding Text To |bc Output
Hello.

I have this..
Code:
$ echo '2+2' | bc
4

But I want to output it as
Code:
4 MB

So, can I achieve that through one single command line?

Thank you.
# 2  
Old 04-22-2010
Code:
$ a=`echo '2+2' | bc` && echo $a MB
4 MB

# 3  
Old 04-22-2010
Bug
Quote:
Originally Posted by pseudocoder
Code:
$ a=`echo '2+2' | bc` && echo $a MB
4 MB

Thank you so much pseudocoder.

Really appreciate.. Smilie

Btw, could you please explain details? Is that && is equivalent to || in Oracle?

Thank you.
# 4  
Old 04-22-2010
You are welcome.
Code:
&& = AND
|| = OR

HTH

Regards
# 5  
Old 04-22-2010
If you just want to do some basic integer arithmetic, you don't have to use bc. Shell arithmetic substitution should suffice:
Code:
$ echo $((2+2)) MB
4 MB

# 6  
Old 04-22-2010
Bug
Quote:
Originally Posted by alister
If you just want to do some basic integer arithmetic, you don't have to use bc. Shell arithmetic substitution should suffice:
Code:
$ echo $((2+2)) MB
4 MB

Wow.. I don't know that could be possible.

Thank you very much! Smilie
# 7  
Old 04-22-2010
Quote:
Originally Posted by alister
If you just want to do some basic integer arithmetic, you don't have to use bc. Shell arithmetic substitution should suffice:
Code:
$ echo $((2+2)) MB
4 MB




This is possible only with BASH and KSH but not with SH and CSH shells.
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