英文:
Docker execution behavior different in command line and cmd file
问题
我在cmd文件中创建了以下脚本：
docker exec my-container bash -c "stat -c '%U' /my/directory"
我得到了以下结果：
U
但是如果我直接在命令行中执行相同的命令，我得到了这个结果：
root
如果我将U替换为A（以获得权限而不是所有权）：
docker exec my-container bash -c "stat -c '%A' /my/directory"
在命令行中，我得到了以下结果：
drwxrwxrwx
但在cmd脚本中，我得到了以下结果：
A
我不明白为什么。例如，我对以下命令没有任何问题：
docker exec my-container bash -c "ls -al /"
docker exec my-container bash -c "su - -c 'ls -al /' myUser"
我在脚本和命令行中都得到了预期的结果。
英文:
I created the following script in cmd file :
docker exec my-container bash -c "stat -c '%U' /my/directory"
I have the following result :
U
But if I do the same in the command line directly, I have this :
root
If I replace U by A (to have rights instead ownership) :
docker exec my-container bash -c "stat -c '%A' /my/directory"
I have that with the command line :
drwxrwxrwx
And that with the cmd script
A
I don't understand why. For instance, I don't have any trouble with the following commands :
docker exec my-container bash -c "ls -al /"
docker exec my-container bash -c "su - -c 'ls -al /' myUser"
I have the expected result with the script and the command line.
答案1
得分: 1
以下是已翻译的内容：
"The underlying problem is windows."
根本问题是Windows。
"The %U is parsed in a batch file and the percent is removed, because there is no closing percent sign, else it would be replaced by the variable content like in echo %PATH%"
%U 在批处理文件中被解析，百分号被移除，因为没有闭合的百分号，否则它会被变量内容替代，就像在 echo %PATH% 中一样。
"On the command line exists different rules for the percent handling, therefore it works here."
在命令行中存在百分号处理的不同规则，因此在这里可以工作。
"To solve it in a batch file, just double the percent signs"
要在批处理文件中解决这个问题，只需将百分号符号加倍：
docker exec my-container bash -c "stat -c '%%U' /my/directory"
英文:
The underlying problem is windows.
The %U is parsed in a batch file and the percent is removed, because there is no closing percent sign, else it would be replaced by the variable content like in echo %PATH%
On the command line exists different rules for the percent handling, therefore it works here.
To solve it in a batch file, just double the percent signs
docker exec my-container bash -c "stat -c '%%U' /my/directory"
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