pipe

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True non-blocking two-way communication between parent and external child process

I have read around 50 posts and tutorials on this topic, I have copied, written and tested around 20 alternatives and done every possible research I can think of. Still, I have not seen a working solu[详细]

2023-03-17 08:52 分类：问答
Inform right-hand side of pipeline of left-side failure?

I\'ve grown fond of using a generator-like pattern between functions in my shell scripts. Something like this:[详细]

2023-03-17 05:11 分类：问答
How to pass command line parameters from a file

I have a C program that reads command line arguments from argv. Is it possible to make a pipe to redirect the contents of a file as command line arguments to my program? Suppose I have a file argument[详细]

2023-03-17 05:02 分类：问答
Can't use a variable out of while and pipe in bash

I have a code like that var=\"before\" echo \"$someString\" | sed \'$someRegex\' | while read line do if [ $condition ]; then[详细]

2023-03-16 23:49 分类：问答
Read from a Pipe

I need to 开发者_如何学Pythonread the total result from a C PIPE. I could just create a massive buffer and slowly fill it, but that seems inefficient and very memory hungry, so I\'m wondering if anyon[详细]

2023-03-16 19:23 分类：问答
Identifying programs "before" and "after" program in a pipeline are from the same "toolset"

Say, I am writting some toolset where every single tool operates on the same textual data stream, parses it, does some operation on it and returns textual stream back using the same syntax as in the o[详细]

2023-03-16 09:46 分类：问答
Python - How to catch a broken pipe

I have just learned about SIGPIPE, and then read about how to handle these in Python. Among other sources, I have read: How to handle a broken pipe (SIGPIPE) in python?[详细]

2023-03-16 06:40 分类：问答
why does redirect (<) not create a subshell

I wrote the following code var=0 cat $file | while read line do var=$line done echo $var Now as I understand it the pipe (|) will cause a sub shell to be created an therefore the variable var on li[详细]

2023-03-16 05:03 分类：问答
unrar.exe and | pipe on windows

I just downlo开发者_开发知识库aded the freeware unrar.exe from winrar website. If, from the command line, you tipe[详细]

2023-03-16 04:34 分类：问答
ksh redirect stdout and stderr to different processes

How can one redirect stdout pipes and stderr pipes nn ksh on UNIX? (Not Linux). The following works to redirect to files:[详细]

2023-03-16 02:57 分类：问答