WebIn case it helps anyone, use export -f my_function and then stdbuf -oL bash -c "my_function -args" if you need to run a function instead of a script. – LHeng. Jan 1, 2024 at 2:52. … WebOK, what's happening is that with both zsh (where & comes from adapted from csh) and bash, when you do cmd1 >&2 & cmd2, both fd 1 and 2 are connected to the outer stdout.So it works at preventing buffering when that outer stdout is a terminal, but only because the output doesn't go through the pipe (so print_progress prints nothing). So it's the same as …

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WebIn Linux 2.2 and earlier, fdatasync () is equivalent to fsync (), and so has no performance advantage. The fsync () implementations in older kernels and lesser used filesystems do not know how to flush disk caches. In these cases disk caches need to be disabled using hdparm (8) or sdparm (8) to guarantee safe operation. WebApr 24, 2015 · You can write a small C program to do this, using tcflush: see How can I flush unread data from a tty input queue on a UNIX system. If you ask a slightly different question, how can I remove data from the STDIN stream buffer of the same TTY session, the answer is simple: type Ctrl-Z, which will suspend the command and flush input, then fg to ... current instagram contests

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Web但在Linux上，在一个非常特定且可重复的实例中，只有程序消息的尾部到达脚本。发现通过在C程序中添加fflush，问题就消失了 编辑：进一步的测试表明，在返回之前的一个fflush就解决了这个问题，至少对于这个特定的实例是这样的。 http://man.he.net/man3/fflush WebUsually, stdout is line-buffered. In other words, as long as your printf argument ends with a newline, you can expect the line to be printed instantly. This does not appear to hold when using a pipe to redirect to tee.. I have a C++ program, a, that outputs strings, always \n-terminated, to stdout. When it is run by itself (./a), everything prints correctly and at the … current in primary winding of ct depends on