In qsub Oracle Grid Engine, this redirects the output to a file out.txt,
qsub -o $(pwd)/out.txt -sync y awesome_script.sh
How to redirect the output to stdout ?
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1 Answer
You can specify /dev/stdout as the filename.
qsub -o /dev/stdout -sync y awesome_script.sh
More info can be found in this answer: https://unix.stackexchange.com/questions/36403
Edit:
A common Unix idiom is that the filename - means stdin for an input
file and stdout for an output file. This has to be explicitly handled by
the program, though; it's not automatic. I can't find anything saying
whether qsub uses this idiom. Try it, it might work.
If you want to pipe the output to another command that does something
with it, you could create a named pipe (man mkfifo) and send the
output to that, with the other process reading from the pipe. Start the
read process first.
For another idea, see this answer, which explains how to use bash process substitution. I haven't used this much, but I think it would be something like:
qsub -o >(other-command-or-pipeline) -sync y awesome_script.sh
If you simply want to see the output in real-time, you could specify
/dev/tty as the file. Or, you could output to a file and watch it with
tail -f.
Hope one of these ideas works for you.
6 Comments
elm
Many Thanks for your response. It seems this approach does not function with
qsub though.
Tom Zych
@elm: How is it failing? Is
/dev/stdout not there? How about /dev/fd? What OS?elm
Program somehow stalls, no cpu loads, no I/O, no files transformed. Using Centos 6. May the issue be at redirecting remote
/dev/stdout to master /dev/stdout ?elm
Any help appreciated. +1 for devising proposed solution which works in most cases.
Tom Zych
Hi @elm, looks like some of that was useful. Since other people may encounter a similar problem, please consider editing your question or leaving a comment, to let them know which approach worked best for you.
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