Validate sshd_config syntax before restart.
Section: sshd Basics
Test sshd configuration
bash
bash
sshd -tExplanation
Validate sshd_config syntax before restart.
Learn the surrounding workflow
Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.
Related commands
Same sheet · prioritizing sshd Basics
Test config for specific user/addr
Evaluate Match blocks for a chosen user and source address.
Restart sshd with systemd
Restart the SSH daemon on systemd-based Linux hosts.
Run sshd in debug foreground mode
Start a test daemon without detaching, useful for troubleshooting.