manual
A collection of manual pages.
iptables-legacy / ip6tables-legacy
The manual page and help for the iptables-legacy / ip6tables-legacy Linux command. xtables-legacy is the original version of iptables that uses the old getsockopt/setsockopt based kernel interface. This kernel interface has some limitations, so iptables can also be used with the newer nf_tables-based API.
nc.openbsd (Netcat OpenBSD)
The manual page and help for the nc.openbsd Linux command. The nc (or netcat) utility can be used for almost anything, including things related to TCP, UDP, or UNIX-domain sockets. It can open TCP connections, send UDP packets, listen on any TCP and UDP ports, perform port scanning, and manage both IPv4 and IPv6 networks. Unlike telnet, nc scripts nicely and sends error messages correctly to stderr instead of stdout like telnet does.
nc.traditional (Netcat traditional)
The manual page and help for the nc.traditional Linux command. netcat is a simple unix utility that reads and writes data over network connections using the TCP or UDP protocol. It is designed to be a reliable "backend" tool that can be used directly or easily controlled by other programs and scripts. At the same time, it is also a feature-rich network troubleshooting and discovery tool, as it can create almost any connection you might need and has many interesting built-in capabilities.
iptables-apply / ip6tables-apply
The manual page and help for the iptables-apply / ip6tables-apply Linux command. The iptables-apply command will try to apply a new rules file (as output from iptables-save, read by iptables-restore) or run a command to configure iptables and then ask the user if the changes are OK. If the new iptables rules break the existing connection, the user will not be able to respond in the affirmative. In this case, after the timeout, the script reverts to the previously working iptables rules.
anachron
The manual page and help for the anacron Linux command. Anacron can be used to execute commands periodically, with a specified frequency in days. Unlike cron(8), it does not assume that the machine is running continuously. Therefore, it can be used on machines that are not running 24/XNUMX to control daily, weekly, and monthly tasks that are usually controlled by cron.