Unable to redirect error output to a file - bad file unit number

I found some website which explained how I can redirect both standard error and standard output to a file. However, it's not working. I get this error:

java Program.java >& out
ksh: out: bad file unit number

What does this mean?

I think you want to do this...

javaprogram 1> /outputfile 2> /errorfile

This causes the output to go into /outputfile and the errors to go into /errorfile.

If you want them both to go to the same place...

javaprog 2>&1

which means to send the errors to the same place the output is going.

Doing
java prog 1> /output 2> /error
ksh: /output: cannot create



java prog 2>&1
print everything to the screen

java prog 2>&1 out
prints output to the output file, but error to the screen

java prog 2>1 out
prints output to the output file, but error to the screen

>> java prog 1> /output 2> /error
>> ksh: /output: cannot create

He he... I didn't mean to literally use these... they were just examples. Like a "real" example might be...

javaprog 1> /var/log/messages 2> /var/log/javaerrors

Of course you'd need to create the file /var/log/javaerrors.

>> java prog 2>&1
>> print everything to the screen

As I said before, this will direct all errors (signified by the 2) to wherever the output is going. If your output goes to the screen, then so will the errors. More likely you want to use the first example above where you direct output and errors to different locations.

Or you can do it like this...

javaprog > /var/log/javaprog 2>&1

which I believe will send both to the same file located in /var/log/javaprog.

REF: http://www.rospa.ca/documents/bitesized/redirection.html