TEE(1)TEE(1)NAMEtee - pipe fitting
SYNOPSIStee [ -i ] [ -a ] [ file ] ...
DESCRIPTION
Tee transcribes the standard input to the standard output and makes
copies in the files. Option -i ignores interrupts; option -a causes
the output to be appended to the files rather than overwriting them.
7th Edition April 29, 1985 TEE(1)