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Questions - fork

Executing execvp() in Child process after fork() still taking over parent process?

I'm executing two bash command ps (which is valid bash command to show processes info) and abc (Invalid bash command) using execvp() inside a child process after creating it with by fork() The problem...
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Mysterious Jack

c

linux

unix

process

fork

Votes: 0

Answers: 1

Latest Answer

The problem is that if execvp fails, you return to the main function in your child process. That leads to both the original (parent) and child process will continue in the loop. If execvp fails you sh...
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Some programmer dude

Can I have a Perl script, initiated from a browser, fork itself, and not wait for the child to end?

Also posted on PerlMonks. I have this very simple Perl script on my linux server. What I would like to be able to do is to call the script from a browser on a separate machine Have the script initiate...
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Bartender1382

perl

fork

Votes: 0

Answers: 3

Latest Answer

One way for a parent process to start another process that will go on its own is to "double fork." The child itself forks and it then exits right away, so its child is taken over by init an...
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zdim

OS True / False Questions

I have several questions regarding OS, which I'd like to verify: Which of the following statement is FALSE? a. Threads within the same process share the same memory space b. Process and its child pr...
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CalculusLover

operating-system

kernel

fork

cpu

Votes: 0

Answers: 1

Latest Answer

a. Threads within the same process share the same memory space Mostly true (for most operating systems for normal usage). No strict requirement for it to be true (e.g. an OS could give each thread i...
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Brendan

Fork() and Wait() with execvp() in C

I'm am trying to use the fork method to call a different program and wait until it completes, I tried to check what is the problem and it seems that the wait function doesn't wait to the childReturns ...
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1barmoshe1

c

linux

fork

wait

execvp

Votes: 0

Answers: 3

Latest Answer

Try chaining these lines: if (processId == 0) execvp(prog, args); else To these: if (processId == 0) { execvp(prog, args); perror(prog); ...
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mevets

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