[Contents] [Index]

About This Document>>     Introduction to SSH Secure Shell >>     Configuring SSH Secure Shell >>     Authentication >>     Log Messages >>     Using SSH Secure Shell >>         Using the Secure Shell Server Daemon (sshd2)>>             Manually Starting the Secure Shell Server Daemon             Automatically Starting the Server Daemon at Boot Time             Operation of the Server Daemon             Resetting and Stopping the Server Daemon             Daemon Configuration File and Command-Line Options             Subsystems         Using the Secure Shell Client (ssh2)>>         Using Secure Copy (scp2)         Using Secure File Transfer (sftp2)         Using Authentication Agent (ssh-agent2, ssh-add2)     Tool Syntax>>     Technical Specifications >>

Subsystems

Subsystems can be defined in the sshd2_config file using the following syntax.

subsystem-<name>      argument

The argument is the command which will be executed when the subsystem is requested.

$ ssh2 -s <name> user@remote  

The argument can be a list of commands separated with semicolon (;), or it can, for example, refer to a script.

One example of a subsystem is sftp.

subsystem-sftp      /usr/local/bin/sftp-server

The sftp subsystem also has an internal alternative. This should be used for example when the user is chrooted and does not have access to the sftp-server binary.

subsystem-sftp      internal://sftp-server