list log files replace particular field

 for i in `ls cdr.30_JUL_2012*`; do perl -e 'while(<>) {@fields=split(/\|/,$_);$fields[5]="hello";for($i=0;$i <= $#fields; $i++){ print "$fields[$i]|";}}' $i > hello.$i; done &

Read line from file1 and search string in other files

IFS='/'; while read line ; do { arr=($line); exp="${arr[1]}${arr[2]}"; tmp=`echo $exp | sed -e 's/"//'`; if [ -z $tmp ]; then continue; fi; len=`expr length $tmp`; if [ $len -gt 30 ]; then grep "${arr[1]}/${arr[2]}" mig_proxy.cdr.26_JUL_2012_mig* | grep -v ${arr[0]}; fi } done < cdr.26_JUL_2012* > report.26_JUL_2012 2>&1


--brief: read line from has delimited by "/" and take third splitted str and search string in other files

Multiply two intergers using bitwise operator

#include<stdio.h>

void main()
{
    int a,b,result;

    printf("Enter the numbers to be multiplied :\n");

    scanf("%d%d",&a,&b);

    result=0;
    while(b != 0)
    {
        if (b&0x01)
        {
            result=result+a;
        }
        a<<=1;
        b>>=1;
    }
    printf("Result:%d",result);
}