stdin Questions
4
Solved
I have a program that basically reads a text file and counts the number of occurrences of each word on each line. Everything works properly when reading from a text file using an ifstream, however,...
3
Solved
I am using Visual Studio Code to debug my Python code.
I want to redirect one text file in stdin and the output be written in another file.
I can reach that by running python directly using the f...
Northwesterly asked 26/11, 2019 at 22:21
7
Solved
I'm streaming data using netcat and piping the output to gawk. Here is an example byte sequence that gawk will receive:
=AAAA;=BBBB;;CCCC==DDDD;
The data includes nearly any arbitrary characters, ...
5
Solved
I'm trying to write the results of a function to stdin.
This is the code :
def testy():
return 'Testy !'
import sys
sys.stdin.write(testy())
And the error I get is :
Traceback (most recent c...
Decani asked 24/2, 2013 at 19:16
3
Solved
Here's the description of gets() from Prata's C Primer Plus:
It gets a string from your system's standard input device, normally
your keyboard. Because a string has no predetermined length, get...
6
I have read about 5-10 different advices how to clear stdin, but none of them suits my needs. The thing is that fflush(stdin) worked perfectly at my computer, but unfortunately it doesn't seem to w...
12
Solved
I'm looking to process a text file with node using a command line call like:
node app.js < input.txt
Each line of the file needs to be processed individually, but once processed the input line...
9
I am attempting to accept input from the console in Kotlin but it is difficult because I am not too sure about the syntax.
I begin with the main
fun main(args: Array<String>) {
}
WHAT ...
7
Solved
I'm trying to write a Python script that starts a subprocess, and writes to the subprocess stdin. I'd also like to be able to determine an action to be taken if the subprocess crashes.
The process...
Eusebiaeusebio asked 12/12, 2011 at 13:46
2
Solved
I try to debug some code in vs code. Everything works fine, but when I trying input something in console nothing happens.
my code:
#include <stdio.h>
#define SIZE 20
int main()
{
char arr[...
Valet asked 11/11, 2020 at 12:9
8
Solved
Is there a way to effectively do this in bash:
/my/bash/script < echo 'This string will be sent to stdin.'
I'm aware that I could pipe the output from the echo such as this:
echo 'This strin...
Riccio asked 30/6, 2011 at 21:7
9
Solved
How can you make SSH read the password from stdin, which it doesn't do by default?
2
Solved
I'm using Git Bash on Windows 10. I would like to import a SQL file to be run in my PostGres 12 local database. I tried the below
$ PGPASSWORD=$DB_PASSWORD psql -U${DB_USER} $DB_NAME < scripts/m...
Harrier asked 20/7, 2022 at 14:19
4
Solved
I want my application to be able to read the input from a redirected file stream through source > my_app, but I do not want it to ask for user input in case there is no redirection.
C provides ...
6
Solved
I want to read a single character at-a-time from the command line in PHP, however it seems as though there is some kind of input buffering from somewhere preventing this.
Consider this code:
#!/u...
Advertising asked 10/9, 2010 at 11:53
2
I know this question has been asked several times but it seems ineffective in my case.
[[ ! -t 0 ]] = Does standard input contains anything?
This command:
echo 'Hello world' | [[ ! -t 0 ]]
echo $?
...
6
Solved
What is the required syntax to redirect standard input/output on Windows PowerShell?
On Unix, we use:
$./program <input.txt >output.txt
How do I execute the same task in PowerShell?
Duwalt asked 12/7, 2012 at 8:10
2
I'm trying to use an external process which reads the STDIN, and writes to STDOUT.
I want to write the equivalent of this in Elixir, without using an external library or wrapper script:
$ echo foo ...
Luciferase asked 17/12, 2022 at 10:40
5
Solved
I need to do something like this post, but I need to create a subprocess that can be given input and give output many times. The accepted answer of that post has good code...
from subprocess impor...
Annunciate asked 19/2, 2015 at 20:13
5
Solved
I basically want to test if stdin has input (like if you echo and pipe it). I have found solutions that work, but they are ugly, and I like my solutions to be clean.
On linux I use this:
bool Std...
3
in the BusyBox command for Linux exists the command microcom to communicate with a serial modem:
BusyBox v1.13.2 (2012-05-10 17:13:08 CEST) multi-call binary
Usage: microcom [-d DELAY] [-t TIMEOU...
Waddell asked 28/8, 2012 at 14:17
3
Solved
I want to do something like:
for line in sys.stdin:
do_something()
if is **END OF StdIn**:
do_something_special()
After a few tries, for now I am doing this:
while True:
try:
line = sys.stdin...
5
Solved
I am writing my first clojure program, and want to read lines from stdin.
When I try this:
(doall (map #(println %) (line-seq *in*)))
I get this exception:
Exception in thread "main" java.lang...
20
Solved
4
Solved
stdin is of type FILE *,
is there a fd macro for it?
Or do I need to convert it myself?
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