Cheat Sheet logoCheat Sheet Today
OpenSSH Server Admin Cheat Sheet/Run sshd in debug foreground mode

Start a test daemon without detaching, useful for troubleshooting.

Back to sheetBrowse commands
Sign in to save
Section: sshd Basics

Run sshd in debug foreground mode

bash
bash
sudo /usr/sbin/sshd -D -d -p 2222
Explanation

Start a test daemon without detaching, useful for troubleshooting.

View in sheet →

Learn the surrounding workflow

Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.

Compare commandsView fixes

Related commands

Same sheet · prioritizing sshd Basics
Test sshd configuration
Validate sshd_config syntax before restart.
OpenIn sheetbashsame section
Print effective sshd config
Dump effective server configuration values.
OpenIn sheetbashsame section
Test config for specific user/addr
Evaluate Match blocks for a chosen user and source address.
OpenIn sheetbashsame section
Restart sshd with systemd
Restart the SSH daemon on systemd-based Linux hosts.
OpenIn sheetbashsame section
Show sshd status
Inspect the daemon status on systemd-based hosts.
OpenIn sheetbashsame section
View sshd logs
Follow SSH daemon logs via journald.
OpenIn sheetbashsame section