TEE (1) | General commands | Unix Manual Pages | :man▋
tee - pipe fitting
tee [-ai] 
The tee utility copies standard input to standard output, making a copy in zero or more files. The output is unbuffered.
The following options are available:
|-a || Append the output to the files rather than overwriting them. |
|-i || Ignore the SIGINT signal. |
The following operands are available:
| file || A pathname of an output file. |
The tee utility takes the default action for all signals, except in the event of the -i option.
shtml">manServer 1.07 from tee.1 using doc macros.
The tee utility is expected to be -p1003.2 compatible.