Darren Reed wrote: > ipfd.c > Type: T > Priority: 3 > Comments: Doing a "return (-1)" from main() doesn't make a whole lot of > sense because $? in sh is an unsigned value of 0-255. See wait(3c). And > as an illustrated example: > $ sh > $ exit -1 > -1: bad number > $ echo $? > 1 > $ sh > $ exit 255 > $ echo $? > 255 >
yep. To be pedantic, the arg of syscall exit(status) is defined in POSIX 1003.1, only the least significant 8 bits will be used for an 'exit status'. So for a program who want to return a failure, either return `1' in main() or call exit(EXIT_FAILURE) should be OK. right? -- Thanks, Jike Song, SW Engineer Sun Microsystems China(ERI) Tel: (86-10)62673147
