Questions tagged [stdin]
Standard input (stdin, file descriptor 0) is the input stream to a program.
stdin
912
questions with no upvoted or accepted answers
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Piping local stdin to 'heroku run' - mustn't write to stdout? 4k stdout buffer?
I'm using thor to write command-line tasks (in a rails 3 app) and trying to pipe input to them over heroku, e.g. cat somefile.csv | heroku run thor sometask
works great on my local machine cat ...
- 4,444
5
votes
1
answer
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Python Warning: Input is not a terminal (fd=0)
I'm trying to create a terminal-based application in Python 3 that is executed within another program (clion).
At first I was using prompt-toolkit, but simple input does the same. Every time I run the ...
- 125
5
votes
1
answer
981
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non-blocking stdin using selectors
Playing around with non-blocking console input, using Python's selectors in combination with sys.stdin, there is something I do not understand:
Suppose I want to exit a loop when a user presses Enter, ...
- 13.5k
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How to read from stdin and write to stdout of WindowsProcess in Pharo/Squeak?
I found a way how to run a command in Windows 10 asynchronously and now I am trying to communicate with it via its stdin, stdout. I did it from Python - I ran python.exe process, sent it a string like ...
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What is wrong with /dev/stdin in an ubuntu docker container with -v used?
I have the following Dockerfile on Mac OS X. Then I built a docker image.
$ cat Dockerfile
FROM ubuntu
$ docker build -t ubtsrv1 .
$ docker image ls -a |grep ubtsrv1
ubtsrv1 latest ...
- 13.1k
5
votes
1
answer
761
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reading from stdin without blocking
I'm writing a python application that needs to explicitly parse all the keyboard input. Therefore I wrote a little loop that keeps reading from stdin. This works fine, however, the stdin.read(1) ...
5
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0
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604
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Can I detect whether a pipe's reader end is being read?
I have a pipe; the reader end is connected to a child process's STDIN, and the parent process has the writer end. Is there a way for the parent to detect whether or not its child is actually reading (...
- 173
5
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How to prevent backspace with Nodejs readline (readable stdin)
I wrote a simple programe to manage command line user interface.
To do so, I use Nodejs Readline API to read the process.stdin Stream.
My problem is that if a user start typing, then press backspace,...
- 44.2k
5
votes
1
answer
2k
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Separate stdin and stdout file in Eclipse
The launch configuration dialog is
Am I right that if one needs the input from a file then output also goes into a file? Why it must be the same file? I do not see any option to have two separate ...
- 10.9k
4
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0
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204
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Read stdin from a NodeJS app deployed to Heroku?
I'm working on a NodeJS server application (NodeJS/Express/Socket.io). It also uses readline to provide a debug console that grabs commands from stdin. It works fine now, but I suddenly realized that ...
- 5,546
4
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0
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isatty() is always returning 1 from eshell (emacs)
Why isatty never identifies that my program is using redirected stdin when using emacs? This is my code:
int val = isatty(STDIN_FILENO);
std::cout << val << std::endl;
If I launch my ...
- 911
4
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0
answers
494
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after forking a process, stdin is null (when configured as pipe)
I'm writing a node js application that supposed to fork another nodejs application.
I want to be able to fetch output from that forked nodejs application in real time.
var maxLogintime = req.query['...
- 31.7k
4
votes
2
answers
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Edit text which printed on stdout from stdin in c/c++
I have the following problem:
How I can print text in my program, so that I can edit it?
For example, program print to stdout:
C:\\BlaBlaBla\file.txt
And I can push backspace, that edit this text:
...
- 425
4
votes
0
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892
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Redirect process input and use shell execute
Is it possible to redirect just stdin but also allow stdout to be written to the console?
I have a process which starts child processes and needs to read the output of those processes, but also ...
- 1,437
4
votes
0
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755
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Python - nonblocking write to subprocess.PIPE?
I' developing with python for a Raspberry Pi video application. I modified a c-program that plays full hd movies to take input from a FIFO.
Like so:
$ ./hello_video.bin test.h264 < .my_fifo
$ ...
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