11 дек. 2012 г. · The simplest way to check is: if (poll(&(struct pollfd){ .fd = fd, .events = POLLIN }, 1, 0)==1) { /* data available */ } but unless you're using nonblocking Check if pipe is empty, UNIX Check if stdin pipe is empty in C Другие результаты с сайта stackoverflow.com

29 февр. 2012 г. · I have piped a line in bash script and want to check if the pipe has data, before feeding it to a program. Searching I found about test -t 0 but ... Empty named pipe - Unix & Linux Stack Exchange How to find out if pipe is broken? - Unix & Linux Stack Exchange Closing different ends in a pipe - Unix & Linux Stack Exchange Check if named pipe is open for reading Другие результаты с сайта unix.stackexchange.com

15 сент. 2023 г. · The default behavior in a pipe is for the writing and reading ends of a pipe is to exhibit blocking behavior, if the partner process is slower.

27 апр. 2011 г. · Use read -t 0 -N 0 to detect if data is available on stdin . Use test -t 0 or tty to try to detect if a pipe is connected to stdin .

24 июн. 2014 г. · I want to check to see if the pipe is empty before returning a value. Is there a simple way to check for an empty pipe and return a pre-specified value if it's ...

4 мар. 2010 г. · I figured that _tell() might help me by letting me know if there was data available. But _tell() seems to always return zero for a pipe, no ...

9 июл. 2022 г. · How can I check if a pipe is empty without reading pipe and getting blocked ? Не найдено: c | Нужно включить: c

14 окт. 2015 г. · It's actually very simple, you just need to ignore the SIGPIPE signal, and it's done with a single function-call: signal(SIGPIPE, SIG_IGN);.

12 нояб. 2010 г. · The following ifnotempty function pipes its input to the command passed as an argument, except that it does nothing if the input is empty.

If any process has the pipe open for writing, reads fail with EAGAIN; otherwise—with no potential writers—reads succeed and return empty. The communication ...