tee #

tee [OPTION]... [FILE]...

    -a, --append
        append to the given FILEs, do not overwrite
    -i, --ignore-interrupts
        ignore interrupt signals
    -p
        diagnose errors writing to non pipes
    --output-error[=MODE]
        set behavior on write error.  See MODE below
    --help
        display this help and exit
    --version
        output version information and exit

MODE determines behavior with write errors on the outputs:
    'warn'
        diagnose errors writing to any output
    'warn-nopipe'
        diagnose errors writing to any output not a pipe
    'exit'
        exit on error writing to any output
    'exit-nopipe'
        exit on error writing to any output not a pipe
    
    The  default  MODE  for  the  -p option is 'warn-nopipe'.
    The default operation when --output-error is not specified, is to exit immediately on error writing to a pipe, and diagnose errors writing to non pipe outputs.

echo 'deploy  ALL=(ALL:ALL) NOPASSWD: ALL' | sudo tee -a /etc/sudoers