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The problem is that my command is slow. As a consequence, I have no output: Sign up using Email and Password. Am I using stdbuf incorrectly or does the call to fflush count as "adjusting" the buffering as described in the sdtbuf man page? By default, Python's print function directs its output to sys. How to pipe output to a file and update after every line.

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How do we handle problem users? This is Ubuntu In a couple of quick tests, both output a complete line at a time. It looks like python decides whether to use buffering or not based on isatty.

bash - Why doesn't stdbuf line buffer the output of some simple c programs - Stack Overflow

Improving the question-asking experience. Unicorn Meta Zoo 9: Sign up using Email and Password. If I can't use stdbuf to line buffer in sstdbuf way is there another command line tool that makes it possible?

When I pipe the program with stdbyfthe output is by default buffered instead of line-buffered. Note well that those docs do not leave room for general environmental influences, such as that of the stdbuf command, on the buffering mode of sys.

The output is now line buffered instead of the standard buffer of characters. As a consequence, I have no output:.

But you are already explicitly flushing stdout, after the first printf which means it will be sent to terminal immediately. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. If you are using it inside a loop then stdbhf output file will be erased on every loop iteration which invokes the redirection.

If your command has no such option, there's also unbuffer which is available in lucid's repositories. The best is to just tell your command not to buffer.

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Sign up or log xtdbuf Sign up using Google. Thanks for introducing me to a new technique, MadCow From man stdbuf NOTE: Sign up or log in Sign up using Google. It only takes a minute to sign up.

Yeah I actually read that page on stdio buffering. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. You can override this value with the -u command-line option.

How to pipe output to a file and update after every line [Archive] - Ubuntu Forums

Another thing you can do is ". Found the solution stdbuf -oL.

Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Sign up or log in Sign up using Google. I used this script from Trick an application into thinking sydbuf stdout is a terminal, not a pipe: How do we handle problem users?

Apr 12 at I don't have it, but I have coreutils installed. Instead I see the same output as in the case when I don't use stdbuf. The stdbkf unbuffer seems to work too, but I'd like to understand why stdbuf doesn't work here. For nohup, why don't you like the presentation on Wikipedia?

As I mentioned, I am working on this for a course assignment at the moment.