如何在scp期间禁用CTRL-C？

I want my script to be able to finish an scp, even if CTRL+C is entered. I have tried using a trap to disable CTRL+C, but it does not work when the scp is in progress. The scp terminates immediately. Is there any way to do this? Code is below. Pretty simple.

我希望我的脚本能够完成一个scp,即使输入了CTRL + C.我已经尝试使用陷阱来禁用CTRL + C,但是当scp正在进行时它不起作用。 scp立即终止。有没有办法做到这一点?代码如下。很简单。

#!/bin/bash
trap '' SIGINT SIGTERM
scp -q user@server:/backup/large_file.txt /local/dir/

UPDATE: Also make sure you have "set -m" at the top of your script.

更新:还要确保脚本顶部有“set -m”。

3 个解决方案

#1

Put it in the background in a subshell to disconnect it from the terminal.

将其放在子shell中的背景中,以将其与终端断开连接。

(scp ... &)

(scp ...&)

EDIT: You'll probably want to redirect any errors to a file.

编辑:您可能希望将任何错误重定向到文件。

#2

Another method is to disable the key interrupt completely until the transfer is done:

另一种方法是完全禁用密钥中断,直到传输完成:

#!/bin/bash
STTY=$(stty -g)                        # Save settings
stty intr undef                        # Disable interrupt
echo -n "Press ENTER to continue: "    # Do your file transfer here
read response
stty ${STTY}                           # Restore settings

#3

If you want to send it to background and be able to get the process in foreground again use this:

如果您想将其发送到后台并且能够再次获得前台进程,请使用以下命令:

$ ( sleep 10 ; echo hello ) &
[1] 1323
$ jobs
[1]  + running    ( sleep 10; echo hello; )
$ kill %1
$
[1]  + 1323 terminated  ( sleep 10; echo hello; )
$ $
$ ( sleep 10 ; echo hello ) &
[1] 1325
$ jobs
[1]  + running    ( sleep 10; echo hello; )
$ fg %1
[1]  + 1325 running    ( sleep 10; echo hello; )
^C
$

So you can send the progress in the background with & and see all background tasks with jobs and you can access it with %1 and kill it with kill and get it to the foreground with fg.

因此,您可以使用&发送后台进度,并查看所有后台任务和作业,您可以使用%1访问它并使用kill将其终止并使用fg将其移至前台。

#1