Redirection: stdout
to file
command > file.txt
Redirection: stderr
to file
command 2> file.txt
Redirection: stdout
and stdout
to file
command &> file.txt
Piping: stdout
to stdin
command1 | command2
Piping: stderr
to stdin
command1 2> >(command2)
Piping: stdout
and stdout
to stdin
command1 |& command2