12-12-2011
Yes, that's it. exec() replaces your current program. You have to fork, whether you want it in the foreground or not. Just wait() for processes to finish if they're in the "foreground".
There's more to fg vs bg than just waiting, there's also things to do with terminal control I'm I'm only barely aware of. If I can't find the right man page, hopefully someone can fill us in.
This User Gave Thanks to Corona688 For This Post:
10 More Discussions You Might Find Interesting
1. Programming
hi there,
i was reading about the exec() function. and if i m not wrong, exec() kills your present process and starts a new process in its place. the process id remains the same.
then it says if exec is successful the text data and stack are overlayed by new file! -
i dont get this part "only... (2 Replies)
Discussion started by: a25khan
2 Replies
2. UNIX for Advanced & Expert Users
Hi,
Ho do I differentiate system call from library call?
for example if I am using chmod , how do I find out if it is a system call or library call?
Thanks
Muru (2 Replies)
Discussion started by: muru
2 Replies
3. Programming
Hi ,
Can anybody name any System Function in C/C++ for Sun-Solaris (unix) platform which can serve the alternative of execl() system function.
Actually I am calling a fork-execl() pair and then making an interprocess communication between these two(parent-child process). But the problem is... (3 Replies)
Discussion started by: Raj Kumar Arora
3 Replies
4. UNIX for Advanced & Expert Users
I would like to call a particular function in a C program using execl(). Is this possible using execl or anyother function ?
Thanks (2 Replies)
Discussion started by: vpraveen84
2 Replies
5. Shell Programming and Scripting
Hi All,
I want to execute a piped command like 'ls /opt | grep xml' using array as parameters list. How can I do that? (2 Replies)
Discussion started by: bharadiaam
2 Replies
6. Shell Programming and Scripting
Hi,
How to write a system calls in a script ?
> cd $HOME
> ls -ltr
thanks in advance.. (10 Replies)
Discussion started by: hegdeshashi
10 Replies
7. Shell Programming and Scripting
I am new in Perl.
I am working in simple script and the varibles are working well outside the exec or system command.
but they don't work as parameters to exec or system command.
The script is attached.
please help. (8 Replies)
Discussion started by: ahmed_zaher
8 Replies
8. UNIX for Dummies Questions & Answers
Hi,
I have to run two commands one after another from a c program. How can i do this with exec system calls. i tried giving them as argument to execv but it is not working.please help
thanks (3 Replies)
Discussion started by: suryashikha
3 Replies
9. Programming
I have a cgi script which is called after certain time interval, which has this:
system ("ls -l /tmp/cgic* | grep -v \"cgicsave.env\" | awk '{print $5}'");
During the execution of this script,the output is 0 sometimes. But due to this the system call is not working at all and doesnt o/p... (2 Replies)
Discussion started by: xs2punit
2 Replies
10. Programming
hi everyone
i wrote a system call and compiled the kernel succesfully...
my system call is in a file in the kernel folder named my_syscall1.c (kernel/my_syscall1.c)
the header file for this system call i added it in the folder include like this include/my_syscall1/my_syscall1.h
my problem is... (2 Replies)
Discussion started by: demis87
2 Replies