Using the Terminal Interface

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Of the functions that manipulate termios structures, tcgetattr() and tcsetattr() are the most frequently used.
As their names suggest, tcgetattr() queries a terminal's state and tcsetattr() changes it. Both accept a file descriptor fd that corresponds to the process's controlling terminal and a pointer tp to a termios struct.
The http://siber.cankaya.edu.tr/SystemsProgramming/cfiles/noecho.c program in Fig. 12.2 illustrates using termios to turn off character echo when entering a password.

Figure 12.2: Using termios to turn off character echo.
$\begin{figure}\begin{center} \small \begin{verbatim}...$

**Figure 12.2:** Using termios to turn off character echo.
$\begin{figure}\begin{center} \small \begin{verbatim}...$

Cem Ozdogan 2007-05-16