Hi all
I have got a doubt in Softlinks.I normally use program /bin/pidof to
know the process id of a process.But I recently noticed it is a soft
link to killall5.But when I use killall5 it kills all processes
instead of find the process id.
Why this behave like this ??,as both the programs are same .
Thanx in advance
Regards

gurut...@gmail.com wrote:
> Hi all
> I have got a doubt in Softlinks.I normally use program /bin/pidof to
> know the process id of a process.But I recently noticed it is a soft
> link to killall5.But when I use killall5 it kills all processes
> instead of find the process id.
> Why this behave like this ??,as both the programs are same .
> Thanx in advance
> Regards

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guruteck@gmail.com wrote:
> Hi all
> I have got a doubt in Softlinks.I normally use program /bin/pidof to
> know the process id of a process.But I recently noticed it is a soft
> link to killall5.But when I use killall5 it kills all processes
> instead of find the process id.
> Why this behave like this ??,as both the programs are same .

A program can easily check to find out what name it is run under, and change
it's behaviour accordingly.

int main(int argc, char *argv[])
{
if (argc > 0)
{
if (strcmp(argv[0],"hi") == 0)
printf("Hello, world\n");
else if (strcmp(argv[0],"bye") == 0)
printf("Goodbye, cruel world\n");
else
printf("Whatchu lookn at, Willis?\n");
return 0;
}
else return 1;
}

The above will do different things, if it is run as 'hi' or 'bye' or a.out


- --
Lew Pitcher
IT Specialist, Enterprise Data Systems,
Enterprise Technology Solutions, TD Bank Financial Group

(Opinions expressed are my own, not my employers')
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Lew Pitcher wrote:

> A program can easily check to find out what name it is run under, and change
> it's behaviour accordingly.
>
> int main(int argc, char *argv[])
> {
> if (argc > 0)
> {
> if (strcmp(argv[0],"hi") == 0)
> printf("Hello, world\n");
> else if (strcmp(argv[0],"bye") == 0)
> printf("Goodbye, cruel world\n");
> else
> printf("Whatchu lookn at, Willis?\n");
> return 0;
> }
> else return 1;
> }
>
> The above will do different things, if it is run as 'hi' or 'bye' or a.out
>

I think that should be "What u talkin' 'bout, Willis?"

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DB wrote:
> Lew Pitcher wrote:
>
>> A program can easily check to find out what name it is run under, and
>> change
>> it's behaviour accordingly.

#include <stdio.h>
#include <stdlib.h>
>> int main(int argc, char *argv[])
>> {
>> if (argc > 0)
>> {
>> if (strcmp(argv[0],"hi") == 0)
>> printf("Hello, world\n");
>> else if (strcmp(argv[0],"bye") == 0)
>> printf("Goodbye, cruel world\n");
>> else
>> printf("Whatchu lookn at, Willis?\n");
return EXIT_SUCCESS;
>> }
else return EXIT_FAILURE;
>> }
>>
>> The above will do different things, if it is run as 'hi' or 'bye' or
>> a.out
>>
>
> I think that should be "What u talkin' 'bout, Willis?"

Only if you like "Diff'rent Strokes" ;-)


- --
Lew Pitcher

Master Codewright & JOAT-in-training | GPG public key available on request
Registered Linux User #112576 (http://counter.li.org/)
Slackware - Because I know what I'm doing.
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