Garbage value Post: 302560470

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Top Forums Shell Programming and Scripting Garbage value Post 302560470 by sujit_singh on Friday 30th of September 2011 12:43:16 AM

09-30-2011

Registered User

thanks for your help but I have to do this problem solely by using perl script. I am new learner in perl so please help me to identify the problem in code written by me.

Quote:

Originally Posted by Corona688

I'd test it character by character instead of testing long strings. I'm not too fluent in perl, but hopefully the logic on this should be followable:

Code:

$ cat palindrome.awk
BEGIN { FS=""; ORS=""; }

{
    for(N=1; N<=NF; N++)
    for(M=N+1; M<=NF; M++)
    {
    # If it does not begin and end on the same char, not a palindrome
        if($M != $N) continue;

        A=N ; B=M; P=1;

        # Test towards the middle until A and B cross
        while(P && (B > A))
            if($(B--) != $(A++) ) P=0;

        if(!P) continue;    # Not a palindrome

        printf("Palindrome, %d-%d: ", N, M);
        for(A=N; A<=M; A++) print $A;
        printf("\n");
    }
}
$ echo "AGCTAGCTCGAAGGTAG" | awk -f palindrome.awk
Palindrome, 5-11: AGCTCGA
Palindrome, 6-10: GCTCG
Palindrome, 7-9: CTC
Palindrome, 10-13: GAAG
Palindrome, 11-12: AA
Palindrome, 13-14: GG
$

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pidof

PIDOF(8)						Linux System Administrator's Manual						  PIDOF(8)

NAME

       pidof -- find the process ID of a running program.

SYNOPSIS

       pidof [-s] [-x] [-o omitpid] [-o omitpid..]  program [program..]

DESCRIPTION

       Pidof  finds  the  process  id's (pids) of the named programs. It prints those id's on the standard output. This program is on some systems
       used in run-level change scripts, especially when the system has a System-V like rc structure. In that case these scripts  are  located	in
       /etc/rc?.d, where ? is the runlevel. If the system has a start-stop-daemon (8) program that should be used instead.

OPTIONS

       -s     Single shot - this instructs the program to only return one pid.

       -x     Scripts too - this causes the program to also return process id's of shells running the named scripts.

       -o     Tells  pidof  to omit processes with that process id. The special pid %PPID can be used to name the parent process of the pidof pro-
	      gram, in other words the calling shell or shell script.

NOTES

       pidof is simply a (symbolic) link to the killall5 program, which should also be located in /sbin.

       When pidof is invoked with a full pathname to the program it should find the pid of, it is reasonably safe. Otherwise it is  possible  that
       it returns pids of running programs that happen to have the same name as the program you're after but are actually other programs.

SEE ALSO

       shutdown(8), init(8), halt(8), reboot(8)

AUTHOR

       Miquel van Smoorenburg, miquels@cistron.nl

								    01 Sep 1998 							  PIDOF(8)