Monday, February 26, 2007
Reverse the digits of a number : BASH beginner
It used to be among our college assignments, a good one for BASH beginners.
#!/bin/sh
#Sum of all digits in a number
num=12334
mod=0
rev=0
echo "Number= $num"
while [ $num -gt 0 ]
do
mod=`expr $num % 10`
rev=`expr $rev \* 10 + $mod`
num=`expr $num / 10`
done
echo "rev= $rev"
$ ./reverse.sh
Number= 12334
rev= 43321
Also a one liner replacement of the above script
$ echo "12334" | rev
43321
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1 comment:
Hi Jadu,
we can use the command $ echo "123" | rev..
But is their any constraints for it..coz i have tried it on Bash Shell of Solaris 9,but it is not working..
Thanks in advance..
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