I am absoultely usless when it comes to programming in C and have been given this question Can anyone PLEASE HELP ME!!! I have to write a safecopy program safecp.c with the syntax: safecp source target target may be a filename or a directory name; if it is a directory, then the name of the target file is target/source A copy is safe if and only if the source exists and is a regular file and has read permission. The target file does not exist or if it exists, is a regular file and has write permissions and has a modification date earlier than source Also I am not allowed to use the shell command to do the program and I can't use command in C that have the effect to do a system call such as the command "system" Can anyone please help Thanks Ian

too many unknowns, drop me a line at johnzarp@attbi.com and I'll see if I can help you!

I have written the following code but i ´m getting an "Bad File Descriptor" while trying to write in Dest Any idea ? #include #include #include #include #include #include main() { int Source; int Dest; int Dest2; char srcfile[80]; char destfile[80]; char buffer[256]; int ret ; int c; struct stat *filetype; filetype = (struct stat *)(malloc(sizeof(struct stat))); printf("File name to copy :"); gets(srcfile); /*printf("File name to copy to :"); gets(destfile);*/ /*printf("%d\n",S_ISDIR(filetype->st_mode));*/ sprintf(destfile,"%sb",srcfile); if ( ! (Source = open(srcfile,O_RDONLY)) ) printf ( "File Not Found\n"); else { Dest = open(destfile,O_CREAT); Dest2 = open("saida",O_CREAT); fstat(Source,filetype); fchmod(Dest,filetype->st_mode); buffer[0] = 0; lseek(Source,0,SEEK_SET); while ( c = read(Source,&buffer,128) ) { buffer[c] = 0; c = strlen(buffer); puts(buffer); write(Dest,&buffer,c); write(Dest2,&buffer,c); printf("write error : %s FD:%d Source : %d\n",strerror(errno),Dest,Source); buffer[0] = 0; } buffer[c] = 0; c = strlen(buffer); write(Dest,&buffer,c); close(Dest); } }

I have fixed the problem I´ll e-mail the code I guess i have missed some tests , tough