Read from standard input and write to standard output and files
tee [OPTION]... [FILE]...
Copy standard input to each FILE, and also to standard output.
-a, --append
append to the given FILEs, do not overwrite
-i, --ignore-interrupts
ignore interrupt signals
--help
display this help and exit
--version
output version information and exit
If a FILE is -, copy again to standard output.
Written by Mike Parker, Richard M. Stallman, and David MacKenzie.
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report tee translation bugs to <http://translationproject.org/team/>
Copyright © 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
Full documentation at: <http://www.gnu.org/software/coreutils/tee>
or available locally via: info '(coreutils) tee invocation'