Questions tagged [stdin]
Standard input (stdin, file descriptor 0) is the input stream to a program.
stdin
3,919
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stdin file descriptor never ready on POLLIN event
I have a C source code that I intend to port from Linux to Windows. After updating the 'poll' function to 'WSAPoll,' I notice that 'revents' on 'stdin' never becomes ready, causing 'WSAPoll' to block ...
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1
answer
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Exit inner loop only when EOF (Ctrl+D) is given via standard input
My program has a main while loop as the main logic, with an inner while loop for running the logic of the "command function". When inside the inner while loop, I want EOF (Ctrl + D) to exit ...
- 441
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2
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573
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Difference to get string with gets and fgets in C
My question is, what is the difference between these two pieces of code.
1)
#include <stdio.h>
#include <stdlib.h>
#define SIZE 7
int main()
{
int strSize;
char tim[SIZE];
...
- 11
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Calling bash from python subprocess maintaining context, returning results and printing to screen
I have a function that sends a statement to bash. It prints the output in real time to the console and also returns the value. It works flawlessly and looks like this:
def call_in_bash(statement):
...
- 13
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1
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Input, left arrow key - Rust
I wrote this code for create an user input.
std::io::stdout().flush().expect("Failed to flush stdout");
std::io::stdin().read_line(stdin_buffer).expect("Failed to read from stdin");...
- 37
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67
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Read from stdin, but only while socket is connected
I'm trying to build a simple Rust in-terminal TCP chat program.
I want to read user input from stdin, but only while the connection is still alive.
Specifically I want to avoid the situation where you ...
- 432
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1
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74
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How to write a BASH command in C which use stdin and stdout
I want to write a programme where I compile a C programme, and save it where BASH recognises programmes are (/usr/bin or somewhere).
For usage I want to run in the terminal
$ c_programme <...
- 119
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C# start python process which listens to StandardInput
I'm using Process.start() in python to start a python script. In general this works, but I have a problem concerning the performance when starting the python script.
The process is as follows:
C# ...
- 111
2
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1
answer
321
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How can I read more than 4096 bytes from stdin, copy-pasted to a terminal on Linux?
I have this code:
import sys
binfile = "data.hex"
print("Paste ascii encoded data.")
line = sys.stdin.readline()
b = bytes.fromhex(line)
with open(binfile, "wb") as fp:...
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OSError: pytest: reading from stdin while output is captured
I am facing a problem in my exercism python exercise 2. I have written the program and it is working fine but when i submit it on exercism it says "OSError: pytest: reading from stdin while ...
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How to execute process with mmap-ed memory as stdin and another mmap-ed memory as stdout?
It is possible in Linux execute process with mmap-ed memory as stdin and another mmap-ed memory as stdout, so parent program can preallocate memory for stdin, write necessary data, execute program and ...
- 101
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46
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Child process using boost::process::child reading some characters from STDIN
Main process is spawning a child process as follows:
bp = boost::process
bp::child(cmd.c_str(), bp::std_out > bp::null, bp::std_err > bp::null, boost::this_process::environment());
where cmd = &...
- 33
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How to input hexcodes/escape sequences through stdin into a program that reads from it twice?
I have a C binary that,
prints out an integer (let's call it modifiedInteger)
takes input from stdin
given modifiedInteger = secretMathFunction(originalInteger), if input is equal to originalInteger, ...
- 13
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Get current console output(sys.stdin) in python
I want to get the current console output(sys.stdin) of my program in python. I found the answer for sys.stdout, however, I found out for the output caused by input() function it goes to sys.stdin ...
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How to launch a program and have a pipe to both stdin and stdout in C on linux [duplicate]
I'm trying to write a C program to configure lemonbar, a status-bar for linux, and i'd like to have the bar be interactive.
The problem is that to write to the bar you have to use the program stdin ...
