Create an interactive Linux Startup

Create an interactive Linux boot-general Linux technology-Linux programming and kernel information. The following is a detailed description. Previously, I wrote a program that runs automatically at startup. However, for various reasons, when the program runs, it reports a segment error. Only the system is reinstalled or the system is started with a CD to delete the Automatic startup Item. however, this is too troublesome, so I thought that the DOS system has a F8 key, and you can select a startup Item for startup.

To enable the single-step startup of DOS by pressing the F8 key during startup to select the startup Item, I modified the startup script/etc/rc. d/rc. local:

Method 1

#! /Bin/bash

# In 2 seconds, the program runs automatically without entering y + press Enter. Otherwise, the program is not executed.

Read-t 2 arg

Case $ arg in

Y)

Exit 1

;;

*)

;;

Esac

./Programs to be automatically executed

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Method 2

The interpreter may not recognize the corresponding read-t 2 arg.

Another method:

Old_stty = 'stty-G'

Stty-icanon min 0 time 20 #2 seconds

Eval read arg

Stty "$ old_stty"

Case $ arg in

...

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The first method is relatively easier, and the second method is more adaptable.