Interdata732/usr/doc/man/man1/bs.1

.th BS I
.sh NAME
bs - backspace-delete filter
.sh SYNOPSIS
bs
.sh DESCRIPTION
.it bs
copies from standard input to standard output; when an ASCII backspace
character is encountered, it and the previous character are deleted
(unless the previous character was '\\n').
It is useful after forgetting to change the erase character with
.it stty
before an edit session.
.sh BUGS
Maximum line length is 256 characters.