Você pode fazer isso adicionando o seguinte parâmetro ao seu arquivo de configuração (/ etc / ssh / sshd_config).
ForceCommand Forces the execution of the command specified by ForceCommand, ignoring any command supplied by the client and ~/.ssh/rc if present. The command is invoked by using the user's login shell with the -c option. This applies to shell, command, or subsystem execution. It is most useful inside a Match block. The command originally supplied by the client is available in the SSH_ORIGINAL_COMMAND environment variable. Specifying a command of “internal-sftp” will force the use of an in-process sftp server that requires no support files when used with ChrootDirectory.
Outra opção é usar os arquivos .ssh / rc por usuário.
Para usar o método ForceCommand, basta adicionar ForceCommand /usr/bin/ownscript
na parte inferior do arquivo /etc/ssh/sshd_config
(no servidor).
O script é assim:
#!/bin/bash
#Script file for ssh
#
#put your commands here
echo "test" > /tmp/test.txt
#
#exit by calling a shell to open for the ssh session
/bin/bash
Não se esqueça de chmodar o script sudo chmod +x /usr/bin/ownscript