"tail -f" no longer mishandles pipes and fifos. With no operands,
tail now ignores -f if standard input is a pipe, as POSIX requires.
- When conforming to POSIX 1003.2-1992, tail now handles some obscure
- cases more correctly, e.g., "tail +cl file" now reads the file "+cl"
- rather than reporting an error, and "tail - file" no longer reads
- standard input.
+ When conforming to POSIX 1003.2-1992, tail now supports the SUSv2 b
+ modifier (e.g., "tail -10b file") and it handles some obscure cases
+ more correctly, e.g., "tail +cl" now reads the file "+cl" rather
+ than reporting an error, "tail -c file" no longer reports an error,
+ and "tail - file" no longer reads standard input.
tee now exits when it gets a SIGPIPE signal, as POSIX requires.
To get tee's old behavior, use the shell command "(trap '' PIPE; tee)".