how to tell if a file is outputing to STDOUT or STDERR?
 

hi im wondering about STDOUT or STDERR i have a file that outputs to the scren but i want to know if its STDOUT or STDERR..

thanks

???
program option1 opiton2 > filename.txt

program 1>stdout.log 2>stderr.log

then examine the logs

program 1>stdout.log 2>stderr.log

then examine the logs


when i do this i get the following error


-bash: stdout.log: Permission denied

when i cat stderr.log i get
-bash: mystery: command not found

For the first error it looks like your disk is read only.
I think we need more details.

What exactly is the cmd you are issuing?
Show the ownerships/perms ie 'ls -l'

What distro & version?

Show contents of /etc/mtab & say which disk you are on.
Which user are you running it as?