tee(1)

NAME
     tee - divert stdin to a file

SYNOPSIS
     tee [-ai] file ...

OPTIONS

     -a   Append to the files, rather than overwriting

     -i   Ignore interrupts

EXAMPLES

     cat file1 file2 | tee x
                         # Save and display two files

     pr file | tee x | lp
                         # Save the output of pr on x

DESCRIPTION

     Tee copies stdin to standard output.  It also makes  copies  on  all  the
     files listed as arguments.

SEE ALSO
     cat(1).