Man, this is not so good, because Java is cross-platform and ‘/dev/null’ is Unix specific (apparently there is an alternative on Windows, read the comments). So your best option is to create a custom OutputStream to disable output. try { System.out.println(“this should go to stdout”); PrintStream original = System.out; System.setOut(new PrintStream(new OutputStream() { public void … Read more
Flushing for stdout is determined by its buffering behaviour. The buffering can be set to three modes: _IOFBF (full buffering: waits until fflush() if possible), _IOLBF (line buffering: newline triggers automatic flush), and _IONBF (direct write always used). “Support for these characteristics is implementation-defined, and may be affected via the setbuf() and setvbuf() functions.” [C99:7.19.3.3] … Read more
systemd.service(5) says: ExecStart= Commands with their arguments that are executed when this service is started. So, systemd runs your /apppath/appname with args >, /filepath/filename, 2>&1 Try: ExecStart=/bin/sh -c ‘/apppath/appname > /filepath/filename 2>&1’
True solution for OSX Write the following function to your ~/.bashrc or ~/.zshrc. capture() { sudo dtrace -p “$1” -qn ‘ syscall::write*:entry /pid == $target && arg0 == 1/ { printf(“%s”, copyinstr(arg1, arg2)); } ‘ } Usage: example@localhost:~$ perl -e ‘STDOUT->autoflush; while (1) { print “Hello\n”; sleep 1; }’ >/dev/null & [1] 97755 example@localhost:~$ capture … Read more
The solution you suggest is a good one: create your processes manually such that you have explicit access to their stdout/stderr file handles. You can then create a socket to communicate with the sub-process and use multiprocessing.connection over that socket (multiprocessing.Pipe creates the same type of connection object, so this should give you all the … Read more
set /p doesn’t work with pipes, it takes one (randomly) line from the input. But you can use more inside of an for-loop. @echo off setlocal for /F “tokens=*” %%a in (‘more’) do ( echo #%%a ) But this fails with lines beginning with a semicolon (as the FOR-LOOP-standard of eol is ;). And it … Read more
If I save the output of this script (i.e. stdout only) so that I could process it later, would that warning interfere with how the output is parsed? Moreover, if output is piped to another process, the warning should show up on the terminal, so the user sees it immediately. For those reasons, in general, … Read more
You need to create pipe (with CreatePipe()), then attach stdout to it’s write end with SetStdHandle(), then you can read from pipe’s read end with ReadFile() and put text you get from there anywhere you like.
If you want the formatting of summary you can pass a print function to model.summary() and output to file that way: def myprint(s): with open(‘modelsummary.txt’,’a’) as f: print(s, file=f) model.summary(print_fn=myprint) Alternatively, you can serialize it to a json or yaml string with model.to_json() or model.to_yaml() which can be imported back later. Edit An more pythonic … Read more
Since you use Linux/Unix, you might also be interested in trying out moreutils. It provides a command called vipe, which reads from stdin, lets you edit the text in $EDITOR, and then prints the modified text to stdout. So make sure you set your editor to Vim: export EDITOR=vim And then you can try these … Read more