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Posted to dev@mina.apache.org by "yuhJohn (via GitHub)" <gi...@apache.org> on 2026/05/18 06:45:21 UTC
[I] The ProcessShellCommandFactory does not support ssh-copy-id and multi-command execution. [mina-sshd]
yuhJohn opened a new issue, #899:
URL: https://github.com/apache/mina-sshd/issues/899
Question 1:
The ssh-copy-id command is not supported. This is actually a standard command for ssh.
clientInput:
`ssh-copy-id -p 123 -i /root/.ssh/id_rsa.pub user@ip`
and received the following command
`exec sh -c'cd; umask 077; mkdir -p \".ssh\" && {[-z `tail -1c .ssh/authorized_keys 2>/dev/null`] || echo >> \".ssh/authorized_keys\" || exit 1;} && cat >> \".ssh/authorized_keys\" || exit 1; if type restorecon >/dev/null 2>&1; then restorecon -F \".ssh\" \".ssh/authorized_keys\"; fi'`
The exec cannot be identified. As a result, the execution fails.
I solved this by customizing exec judgment.
```
public Command createCommand(ChannelSession channel, String command) throws IOException {
LOGGER.error("create Command: " + command);
if (command !=null && command.startsWith("exec ")) {
command = command.substring(5);
}
return new ShellWrapperCommand(command);
}
```
Question 2: Multiple commands such as " ls -l; rm -rf /tmp/test" cannot be executed correctly.
The input is as follows:
`ssh user@IP -p 123 "echo test2; echo 22"`
The actual output is
`test2; echo 22`
I understand that the preceding two questions are very common scenarios. Is SSHD not supported by default?
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Re: [I] The ProcessShellCommandFactory does not support ssh-copy-id and multi-command execution. [mina-sshd]
Posted by "tomaswolf (via GitHub)" <gi...@apache.org>.
tomaswolf closed issue #899: The ProcessShellCommandFactory does not support ssh-copy-id and multi-command execution.
URL: https://github.com/apache/mina-sshd/issues/899
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Re: [I] The ProcessShellCommandFactory does not support ssh-copy-id and multi-command execution. [mina-sshd]
Posted by "tomaswolf (via GitHub)" <gi...@apache.org>.
tomaswolf commented on issue #899:
URL: https://github.com/apache/mina-sshd/issues/899#issuecomment-4502338553
Looking at this `ProcessShellFactory` code I must say I think this is simply wrong on Linux systems. It tries to run the command directly, but it should actually start a shell and make that shell execute the given command.
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