hi..
how can i manipulate the source code of ps command in order to hide a process from the list that run by ps.
as you know ps command list all the process that exist in /proc.
so how can i do this??
this is part of my assingment...
plz response me as soon as possible...
thanks...

What do you mean, "part of your assignment" ? Is this schoolwork?

Forgive me, but it sounds like a rather sketchy assignment to me. What is the intention of hiding certain processes?

In any event, you seem to understand that you would need to edit the sourcecode of `ps` to accommodate your request. This would produce a new "tool" which would/should no longer be known as `ps`, since it would be somewhat defective compared to the REAL `ps` tool. You need to learn some C programming to do this.

Do you want someone to do the assignment for you? That won't happen. Show us what you've come up with so far, and *maybe* someone can point you in the right direction.

Sasha

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Answering this question may be contrary to LQ Rules: "Posts containing information about cracking, piracy, warez, fraud or any topic that could be damaging to either LinuxQuestions.org or any third party will be immediately removed". Thread reported for decision by the moderators.

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And in what way is it cracking, piracy or warez?
GNU GPL = Source is suppose to be modified.

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You know fully well what their concerns are. A hidden process suggests bad things at foot. Just like Aircrack is a fine piece of code, it's uses are typically less admirable.

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The OP hints its a school assignment.
And there is legit uses for example filtering out "ps" itself.

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Yes there is that, and as such I've not closed the thread. As for needing to remove itself? Can't see it personally. If you felt the need to do that, then you're probably using the wrong tool, and should use pgrep or someething else.

The OP wrote "this is part of my assingment" which may or may not be academic. It would be a strange academic assignment, having no obvious application in the (ethical) real world.

Note that the first reply already challenged the OP wrt homework or not. Echoing that post or trying to discuss the case before the OP replies clutters up this thread and does not help LQ, the OP or you.

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You download the source code, you read it, you understand it, then you change it where appropriate.

Or you want others to do the job for you ?

hi friends..this mini project is part of my system security course.
by using one programming language like c, i have to change ps source code such that one existing process will be hided from the list which showed by running ps -a in console.
any help is helpful for me,because i don't know how to start.

Download the source code first.

And the souce code can be downloaded here:

1. http://procps.sourceforge.net/

or

2. http://procps.cvs.sourceforge.net/procps/procps/

This, of course, is correct. And this can be inferred from reading 'man ps'. And reading 'man ps' to the very end is what I expected from the OP.

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