New command consideration - curtail

[Wolaver, David]

Hi all,

I have developed a command line program that I would like to have considered 
for inclusion in a future revision of coreutils.  The name of the program is 
"curtail".  It reads stdin and appends to an output file while ensuring that 
the file will never exceed a specified maximum size.  The main intent is to 
place a bound on the output of a program such that it cannot create a runaway 
log file.  The output file is truncated (in multiple of block size) at the 
beginning such that the output file always contains the latest output of the 
program.

user_program | curtail -s 4M output.txt

Thanks for your consideration.

Best regards,
Dave