如果所有用户的脚本都相同，您可以使用 lockfile 方法.如果您获得了锁，请继续，否则会显示一条消息并退出.

If the script is the same across all users, you can use a lockfile approach. If you acquire the lock, proceed else show a message and exit.

举个例子:

[Terminal #1] $ lockfile -r 0 /tmp/the.lock
[Terminal #1] $ 

[Terminal #2] $ lockfile -r 0 /tmp/the.lock
[Terminal #2] lockfile: Sorry, giving up on "/tmp/the.lock"

[Terminal #1] $ rm -f /tmp/the.lock
[Terminal #1] $ 

[Terminal #2] $ lockfile -r 0 /tmp/the.lock
[Terminal #2] $ 

获得/tmp/the.lock 后，您的脚本将是唯一可以执行的脚本.完成后，只需取下锁即可.在脚本形式中，这可能如下所示:

After /tmp/the.lock has been acquired your script will be the only one with access to execution. When you are done, just remove the lock. In script form this might look like:

#!/bin/bash

lockfile -r 0 /tmp/the.lock || exit 1

# Do stuff here

rm -f /tmp/the.lock