On Mon, 29 Jul 2002, Ning luo wrote:
>
> Hi Sir
>
> I have a perl script using system function, like
> system("perl goup 1>basicName.scan 2>basicName.err");
>
> goup is another perl script, what I want to do is executing goup, then print
> the results to the file basicName.scan, if it abort abnormally print the
> error message to file basicName.err.Would you mind give a help how to do
> this.
There is nothing wrong your statement unless perl is not in the path
and/or goup is not printing it's error strings to STDERR.
>
> I have an example about system call, like
> system ("perl goup 1>basicName.err 2>&1 ")
> This is to print error message to file basicName.err, there is no syntax
> error, but I am not sure the meaning of 1 and 2>&1.
1 and 2 are the file descriptors for standard output and error respectively.
1>basicName.err means all messages that usually would get printed to the
standard output will now go to basicName.err. 2>&1 says that whatever is
written to standard error will go to the standard output, which in this
case is to the file basicName.err.
>
> Thanks in advance
>
> sincere yours
>
> Ning
>
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