fork and exec ftp Post: 302130641

10 More Discussions You Might Find Interesting

1. Programming

Fork and exec

Hello! I am working on a server where I should have 4 (resident)processes, one of them being "the father" of the others, so I do 3 forks. The problem that I have is that I do an accept (for sockets) in the "father" process and I want to transmit the job to one of the processes "child" with...

2. UNIX for Dummies Questions & Answers

FORK/EXEC technique

Hi! Can someone explain me exactly this technique? Why a process (PARENT) creates a copy of itself with FORK (CHILD)? What's the reason of this behaviour? Sorry, but I cannot understand the logic behind it. Thanks.

3. Programming

fork/exec clobbers write. I need ideas why...

On my *nix box, I have a telegram program. When I go like tel person "la\nla\nla\n" the person sees "la\nla\nla\n" However, when I have a program that forks and execs tel like: pid = fork(); if (pid < 0) { perror("fork failed"); exit(EXIT_FAILURE); } if (pid == 0) {...

4. Shell Programming and Scripting

fork and exec

I need to ssh to a remote server and run my script there. This is my script. $ssh = "ssh username@host"; $cmd = "$ssh 'cd <my dir> && < sudo Run_exe>'"; my $pid = fork; if ($pid == 0){ exec $cmd; } When I run this I get: pccons_getchar: got r == 0

5. Programming

How forbid use fork() in exec() program.

Hello World! I am writing code in C++ which have to launch another application X using exec(). I would like to set some limits on it using setrlimit etc... My problem is that i don't know how to forbid using fork() and strlimit by application X. How can i do it?

6. Programming

Fork and then exec problem with signals

Hi All, In my program i am handling SIGHUP signal. In the handler i fork and then exec on child process same binary file which is running. Parent process will die after 10 mins. Now my child process which was exec with same binary file is not receiving SIGHUP signal. Below is the progran code:...

7. Programming

Newbie question on exec,fork, wait,pipe C

Hello everybody.I want to make clear that i am not going to ask from anybody to build my asignement but i have a big problem. I can't seem to find anywhere ONE good example on C about what i am trying to do:wall:.I think it is simple. All i ask is one example, even a link is fine. So, i want to...

8. UNIX for Dummies Questions & Answers

fork with exec

What is is difference between 'fork with exec' and 'fork without exec'? How both are related?

9. SCO

FTP problem with site exec command

Hello dear Users, I am for the first time in this forum. I come from Germany. Please excuse my bad englisch. My OS is SCO open Server Release 5. I have a problem whith FTP and the command "site exec" if I use the command "ftp> site chmod 777 /tmp/startkpf.sc 200 CHMOD command successful. ...

10. UNIX for Beginners Questions & Answers

Question about global environment variables & fork() exec()

Hello... And thanks in advance for any help anyone can offer me on my question! I've been doing a lot of reading to try and find my answer... But I haven't had any luck What I'm trying to understand is where a child process inherits global environment variables from? I understand the exec()...

LEARN ABOUT BSD

fork

FORK(3F)																  FORK(3F)

NAME

       fork - create a copy of this process

SYNOPSIS

       integer function fork()

DESCRIPTION

       Fork  creates  a  copy  of  the	calling  process.   The only distinction between the 2 processes is that the value returned to one of them
       (referred to as the `parent' process) will be the process id of the copy.  The copy is usually referred to as  the  `child'  process.   The
       value returned to the `child' process will be zero.

       All logical units open for writing are flushed before the fork to avoid duplication of the contents of I/O buffers in the external file(s).

       If the returned value is negative, it indicates an error and will be the negation of the system error code.  See perror(3F).

       A corresponding exec routine has not been provided because there is no satisfactory way to retain open logical units across the exec.  How-
       ever, the usual function of fork/exec can be performed using system(3F).

FILES

       /usr/lib/libU77.a

SEE ALSO

       fork(2), wait(3F), kill(3F), system(3F), perror(3F)

4.2 Berkeley Distribution					   May 27, 1986 							  FORK(3F)

10 More Discussions You Might Find Interesting

1. Programming

Fork and exec

Discussion started by: driki

2. UNIX for Dummies Questions & Answers

FORK/EXEC technique

Discussion started by: marshmallow

3. Programming

fork/exec clobbers write. I need ideas why...

Discussion started by: frequency8

4. Shell Programming and Scripting

fork and exec

Discussion started by: looza