echo.3cur

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· 3CUR 代码 · 共 32 行

.TH echo 3cur 
.SH Name
echo, noecho \- enable/disable terminal echo
.SH Syntax
.B
int echo(\|)
.PP
.B
int noecho(\|)
.SH Description
.NXR "echo subroutine"
.NXR "noecho subroutine"
The
.PN echo 
routine enables echoing of characters typed by the user.
The
.PN noecho 
routine disables echoing of characters typed by the user.
.PP
Initially, input characters are echoed.
Subsequent calls to 
.PN echo
and 
.PN noecho 
do not flush typeahead.
.SH Return Values
The
.PN echo
and
.PN noecho
functions return OK on success and ERR on error.