Command manuals for console

BusyBox - The Swiss Army Knife of Embedded Linux

chsh - change login shell

env - run a program in a modified environment

expand - convert tabs to spaces

file — determine file type

fold - wrap each input line to fit in specified width

gpm - a cut and paste utility and mouse server for virtual consoles

join - join lines of two files on a common field

mail, mailx, Mail — send and receive mail

mutt - The Mutt Mail User Agent

numfmt - Convert numbers from/to human-readable strings

printf - format and print data

rev - reverse lines characterwise

screen - screen manager with VT100/ANSI terminal emulation

tac - concatenate and print files in reverse

tee - read from standard input and write to standard output and files

timeout - run a command with a time limit

tmux — terminal multiplexer

tr - translate or delete characters

truncate - shrink or extend the size of a file to the specified size

unexpand - convert spaces to tabs

wc - print newline, word, and byte counts for each file