The manual page and help for the badblocks linux command. The badblocks command is a program for finding bad blocks on a device (usually a disk partition).

Manual page and help for the localedef linux command. The localedef command reads the specified character map and input files, compiles them into a binary form that can be quickly used by locale functions in the C library (setlocale (3), localeconv (3), etc.), and places the output in the outputpath.

Manual page and help for the tcpdump linux command. Tcpdump prints the contents of the network interface data packets that correspond to the specified logical expression; the description is preceded by a timestamp, by default hours, minutes, seconds, and fractions of seconds since midnight.

The manual page and help for the eval built-in Bash command.

Manual page and help for the alsamixer linux command. Alsamixer is an ncurses-based mixer that can be used with ALSA sound card drivers. It supports multiple sound cards with multiple devices.

The manual page and help for the update-alternatives linux command. Update-alternatives creates, removes, maintains, and displays information about symbolic links to Debian alternatives.

Manual page and help for the fail2ban-testcases linux command. The fail2ban-testcases command is a tool for running Fail2Ban tests.

The manual page and help for the iconv linux command. The iconv program reads the text in one character encoding format and returns it in another character encoding. If you do not receive input files, you are reading from standard input.

Manual page and help for the addgroup linux command. Use the addgroup command to create groups on Linux.

Manual page and help for the groupadd linux command. The groupadd command creates a new group account using the values ​​specified on the command line and the system defaults.