有没有办法清除正在运行的进程的标准输出 [英] Is there a way to flush stdout of a running process

问题描述

我有一个长时间运行的过程，其中stdout重定向到文件.例如:

I have a long-running process with stdout redirected to a file. E.g.:

./my-script.sh > file.txt &

部分stdout仍被缓存，但是我想将其刷新到文件中，以便更早地看到结果.有办法吗?

Part of the stdout is still cached, but I would like to flush it to the file, to see the results earlier. Is there a way to do it?

推荐答案

缓存由libc处理.您可以使用stdbuf命令更改缓冲区大小:

The caching is handled by the libc. You can use the stdbuf command to change the buffer size:

stdbuf -o0 ./my-script.sh > file.txt &

-o0将stdout的缓冲区大小设置为0.也许您还想要-e0作为stderr.

-o0 sets the buffer size for stdout to 0. Probably you also want -e0 for stderr.

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