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08-14-2006
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can we send arguments to system() call
Hi friends
my C code is int main() { system("cp <source> <destination>"); } my question is how to set variables for <source> and <destination> how can we pass it to system() call. can you suggest me thankyou kingskar 
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08-14-2006
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In such situations it's always better to do a combination of fork and one of the exec family member.
if(fork()==0){ //do nothing } else{ exec....( what ever suits you) } You can also check the exec man page to see the all members of exec family!! regards Apoorva kumar
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08-14-2006
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vfork and exec - that is what is done in system function call..
and to answer your question, something like this would do.. Code:
/* source file in char source[512] and dest file in char dest[512] */ char str[512]; memset(str, '\0', sizeof(512)); sprintf(str, "/usr/bin/cp %s %s", source, dest); ret=system(str);
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08-17-2006
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Quote:
Yes your code is exactly fits for my requirement. Thankyou Cheers kingskar
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08-17-2006
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if you are using glibc it may be better to use:
#define _GNU_SOURCE #include <stdio.h> char *buf; asprintf(&buf,"cp %s/%s",src,dst); /* do not forget error check */ system(buf); free(buf); the advantage is that you have no limits for pathlenght. you can also emulate asprintf with 2 calls to snprintf()
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08-17-2006
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what is the need to use free here ?
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