A typical call to execl might be something like this:
The first argument is a path to a file to be executed. Did I understand that you made the first argument a directory? You can't execute a directory.
The thing is I don't know what the direct path to the file would be. What I put was obviously wrong. And yea, I made my first argument a directory. How can I find what the direct path would be?
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)
Hi,
I am calling a program that greps and returns 72536 bytes of data on STDOUT, say about 7000 lines of data on STDOUT.
I use pipe from the program am calling the above program. Naturally, I execute the above program (through execl() ) throught the child process and try to read the... (4 Replies)
Hi,
I would like to know how to call a program "cmp_size" ... where to put in progam to run it
ex: program checkdisk is below, and it will call a nother problem "cmp_size"
Do I just put the cmp_size program at the end of this program.
Thank you very much,
# check all directory for size... (3 Replies)
Dear all,
Currently I'm working on a C program (OS = ubuntu 9.0.4)in which a USB key will
be mounted and umounted for several times. I read the man page
of the mount system call.
I use the following test code
#include <sys/mount.h>
int main(int argc, char *argv)
{
if... (5 Replies)
I need to write a c program that uses the fork and excel system calls to run the shell script mode invoked like this: "./mode 644 ls -l" (that is the argumetns will always be 644 ls -l)
here's the mode script:
#!/bin/sh
octal="$1"
shift
find . -maxdepth 1 -perm $octal -exec $@ {} \;
... (3 Replies)
Hello everyone!
I'm quite new here, but this forum helped me a lot before without registering :-)
I'll go directly to my problem, I have been searching a bit about this issue but I was not successful.
I need to write a program in C code to notificate me (to my email) when some action is done... (7 Replies)
Write a program using select, which will create some number of child processes that continuously send text messages to the parent process using pipes. Each child has its own pipe that it uses to communicate with the parent. The parent uses select () to decide what pipes should be processed to... (1 Reply)
main()
{
printf("before execl");
execl("/home/nirmala/os/fact","fact");
printf("this line will not be printed");
}
for the above program ,the obj file of fact.c is getting loaded correctly.am getting the output as...
factorial =6
but in ouput am not getting the string given in... (2 Replies)