Chapter 3. Logging in

Table of Contents

Reading the Man pages - A review
TELINIT(Older technology look at "init q")
Run Level versus programs
Default run level to go to as defined in /etc/inittab
Example Debian /etc/rcS.d/ directory
Getty and gettdefs
Terminal Emulation
Terminfo (Some Extracts from stated reference material)
Terminfo Compiler (tic)
Save disk space
Multiple Virtual Terminals
Some tips
In Summary

This section is covered in the system administration course, however we are attempting to ensure that you have the inner working details as well as the administration details.

Reading the Man pages - A review

Can you see when you read the man pages that the commands, file structures etcetera are divided into categories that are represented by numbers, for example - shutdown(8).

The following is a list of these categories:

1   Executable programs or shell commands
2   System calls (functions provided by the kernel)
3   Library calls (functions within program libraries)
4   Special files (usually found in /dev)
5   File formats and conventions e.g. /etc/passwd
6   Games
7   Miscellaneous (including macro  packages  and  conventions), \
                e.g. man(7), groff(7)
8   System administration commands (usually only for root)
9   Kernel routines [Non standard]

This was taken from the man page on "man"