
autossh:tldr:eac8e
This command runs the autossh
program with several options and environment variables set. Here's what each part of the command does:
-
AUTOSSH_DEBUG=1
sets theAUTOSSH_DEBUG
environment variable to1
, which enables debug mode forautossh
. This will provide more detailed output for troubleshooting purposes. -
AUTOSSH_LOGFILE=${path-to-autossh_log_file.log}
sets theAUTOSSH_LOGFILE
environment variable to the specified path, which determines the location and name of the log file forautossh
to write its logs.${path-to-autossh_log_file.log}
should be replaced with the actual file path. -
autossh
is the command that runs theautossh
program. -
-f
runsautossh
in the background (in the foreground by default), allowing it to detach from the terminal and continue executing even if the terminal is closed. -
-M ${monitor_port}
specifies the monitor port forautossh
. The monitor port is used to send keep-alive messages to the remote SSH server to maintain the SSH connection.${monitor_port}
should be replaced with the actual port number. -
-v
enables verbose mode forautossh
, providing additional information and debugging output during its execution. -
-E ${path-to-ssh_log_file.log}
sets the log file path for SSH client log messages.${path-to-ssh_log_file.log}
should be replaced with the actual file path. This log file will contain the log messages generated by the underlying SSH client thatautossh
uses. -
${ssh_command}
represents the SSH command to be executed byautossh
. It should be replaced with the actual SSH command thatautossh
will run to establish and maintain the SSH connection.
Overall, this command sets up autossh
with debug mode enabled, specifies log files for autossh
and ssh
client logs, and runs autossh
in the background with verbose output. It also specifies the monitor port and the SSH command to be executed.