Standard input (stdin, file descriptor 0) is the input stream to a program.
Questions tagged [stdin]
3861 questions
73
votes
11 answers
getpasswd functionality in Go?
Situation:
I want to get a password entry from the stdin console - without echoing what the user types. Is there something comparable to getpasswd functionality in Go?
What I tried:
I tried using syscall.Read, but it echoes what is typed.
RogerV
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73
votes
2 answers
Nodejs Child Process: write to stdin from an already initialised process
I am trying to spawn an external process phantomjs using node's child_process and then send information to that process after it was initialized, is that possible?
I have the following code:
var spawn = require('child_process').spawn,
child =…
zanona
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71
votes
10 answers
PHP standard input?
I know PHP is usually used for web development, where there is no standard input, but PHP claims to be usable as a general-purpose scripting language, if you do follow it's funky web-based conventions. I know that PHP prints to stdout (or whatever…
Chris Lutz
- 73,191
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70
votes
11 answers
node.js: readSync from stdin?
Is it possible to synchronously read from stdin in node.js? Because I'm writing a brainfuck to JavaScript compiler in JavaScript (just for fun). Brainfuck supports a read operation which needs to be implemented synchronously.
I tried this:
const fs…
panzi
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69
votes
11 answers
Eclipse reading stdin (System.in) from a file
Is it possible for Eclipse to read stdin from a file?
Kevin
68
votes
9 answers
What's the fastest way to read from System.in in Java?
I am reading bunch of integers separated by space or newlines from the standard in using Scanner(System.in).
Is there any faster way of doing this in Java?
pathikrit
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63
votes
8 answers
how to redirect STDOUT to a file in PHP?
The code below almost works, but it's not what I really meant:
ob_start();
echo 'xxx';
$contents = ob_get_contents();
ob_end_clean();
file_put_contents($file,$contents);
Is there a more natural way?
omg
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63
votes
1 answer
How to extract tar archive from stdin?
I have a large tar file I split. Is it possible to cat and untar the file using pipeline.
Something like:
cat largefile.tgz.aa largefile.tgz.ab | tar -xz
instead of:
cat largefile.tgz.aa largfile.tgz.ab > largefile.tgz
tar -xzf largefile.tgz
I…
Charlie
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59
votes
1 answer
Read expression for grep from standard input
How can I make grep read the expression from standard input (stdin)?
For example (the following doesn't work):
grep -i -f &0 /path/to/text/file < "/regexp/"
Dor
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59
votes
5 answers
How do I pipe output into Visual Studio Code?
I want to pipe the output of a command into a new text window in Visual Studio Code.
Normally, I'd do something like this:
echo foo | code
...but that appears to not work; Visual Studio Code launches, but it does not display the input. Is there a…
Craig Walker
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58
votes
4 answers
Interactive input/output using Python
I have a program that interacts with the user (acts like a shell), and I want to run it using the Python subprocess module interactively.
That means, I want the possibility to write to standard input and immediately get the output from standard…
Talor Abramovich
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53
votes
2 answers
Reading line by line from STDIN
I want to do something like this:
$ [mysql query that produces many lines] | php parse_STDIN.php
In parse_STDIN.php file I want to be able to parse my data line by line from stdin.
sobi3ch
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52
votes
1 answer
Read stdin as binary
I have code that opens and reads a file from binary.
with open (file, mode="rb") as myfile:
message_string=myfile.read()
myfile.close
I now need to do the same thing reading from stdin. But I can't figure out how to read binary.
The…
BeMy Friend
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51
votes
8 answers
How do I read a string entered by the user in C?
I want to read the name entered by my user using C programmes.
For this I wrote:
char name[20];
printf("Enter name: ");
gets(name);
But using gets is not good, so what is a better way?
Peeyush
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49
votes
6 answers
How to read from stdin with fgets()?
I've written the following code to read a line from a terminal window, the problem is the code gets stuck in an infinite loop. The line/sentence is of undefined length, therefore I plan to read it in parts into the buffer, then concatenate it to…
robdavies35
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