Manual page for the socket() Linux system call. socket() creates an endpoint for communication and returns a file descriptor that refers to that endpoint. The file descriptor returned by a successful call will be the lowest file descriptor not currently open to the process.

The manual page and help for the nc / ncat Linux command. Ncat is a network utility with functions that read and write data from the command line over networks. It is designed to be a reliable back-end device that provides instant network connectivity to other applications and users. Netcat can be used to debug and monitor network connections, search for open ports, transfer data, etc.

The manual page and help for the ss Linux command. ss is the command to print socket statistics. Allows you to display information similar to netstat. It can display more TCP and status information than other tools.

The manual page and help for the nmap Linux command. Nmap (Network Mapper) is an open source tool for network discovery and security monitoring.

The manual page for the dconf-service Linux service.

Manual page and help for the pdbedit Linux command. The pdbedit command is a program for managing user accounts stored in the sam (Samba) database.

Manual page and help for the b2sum Linux command. The b2sum command calculates and checks the BLAKE2 checksums of the specified file. If no file is specified, the program reads from standard input.

The manual page and help for the avahi-daemon Linux command. The avahi-daemon command is the Avahi mDNS / DNS-SD daemon manager.

Manual page and help for the sshd Linux command. Sshd (OpenSSH Daemon) is a program for the ssh daemon. Together, these programs replace rlogin and rsh and provide secure, encrypted communication between two untrusted hosts over an insecure network. Sshd monitors client connections. By default, it starts from the /etc/init.d/ssh file at boot time. Creates a new daemon for each incoming connection. Daemons handle the exchange of authentication keys, encryption, authentication, command execution, and data exchange.

Manual page and help for the ssh-keyscan Linux command. Ssh-keyscan is a utility that collects the public SSH keys of many servers. It is designed to help you build and validate ssh_known_hosts files, the format of which is documented in sshd (8). Ssh-keyscan provides a minimal interface for shell and perl scripts.