在后台运行 ssh 进程被暂停 [英] running ssh process in background gets paused

问题描述

我有一些脚本正在虚拟机上开发，但有时需要在生产服务器上运行才能进行正确测试.

I have some scripts that I'm developing on a vm but sometimes needs to run on a production server to be properly tested.

我需要脚本的输出进行调试，所以我想出了以下解决方案:

I need the output from the scripts for debugging so I've tinkered together the following solution:

function test_remote() {
    scp $1 Prod:/home/xxx/tmp/
    n=${1:t:r}
    f=${1:t}
    cmd="ssh Prod \"/usr/bin/php /home/xxx/tmp/$f\" > /home/xxx/tests/$n-remote-test.html"
    eval ${cmd}
    ssh Prod "rm /home/xxx/tmp/$f"
    echo "done"
}

我已经放在我的 .zshrc 文件中

which I have placed in my .zshrc file

我想使用

test_remote path_to_file/php_file.php &

但我总是得到以下结果

[1]  + 12996 suspended (tty input)  test_remote path_to_file/php_file.php

如果我用 bg 恢复它，它只会重复相同的消息

if I resume it with bg it just repeats the same message

推荐答案

当后台进程尝试从标准输入读取时，它会收到一个暂停它的信号.这样用户就可以再次将进程带到前台并提供必要的输入.

When a background process attempts to read from standard input, it is sent a signal which suspends it. This is so the user can bring the process to the foreground again and provide the necessary input.

如果不需要提供输入，您可以在调用 test_remote 或 cmd 时从 /dev/null 重定向标准输入>.

If no input needs to be provided, you can redirect the standard input from /dev/null, either when calling test_remote or in cmd.

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