V7/usr/man/man3/getpass.3

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.TH GETPASS 3 
.SH NAME
getpass \- read a password
.SH SYNOPSIS
.B char *getpass(prompt)
.br
.B char *prompt;
.SH DESCRIPTION
.I Getpass
reads a password from the file
.IR /dev/tty ,
or if that cannot be opened, from the standard input,
after prompting with the null-terminated string
.I prompt
and disabling echoing.
A pointer is returned to a null-terminated string
of at most 8 characters.
.SH FILES
/dev/tty
.SH "SEE ALSO"
crypt(3)
.SH BUGS
The return value points to static data
whose content is overwritten by each call.