how to find files executed upon system startup in linux os?

Question

The operating system's complete name is Redhat Linux enterprise EL4

Answer 1

Typically, the startup scripts for Redhat are kept in /etc/init.d, but not every one of those scripts is guaranteed to be executed. To see which ones are actually running, you have to go to /etc/rc[0-6].d, and look at which ones are actually executed at various run levels on your system.

You can also consult the "Services" GUI tool from your X windows interface.

Answer 2

Conventionally the startup files for all Unix/Linux systems are found in "/etc/rc.d" or "/etc/init.d". Red Hat Linux variants as a rule have both directories, though often they wind up being the same files hard linked to appear in multiple places.

Under "/etc/init.d" you'll generally see a bunch of shell scripts which start and shut down the various parts of your system. Under "/etc/rc.d" you'll find a more elaborate arrangement of scripts under subdirectories with names like "rc#.d" where "#" is a single digit corresponding to one of your system's run levels. On some systems these "rc#.d" directories are under "/etc" with no "rc.d" directory in between.

Usually the digits correspond to various run states. Usually 0 corresponds to shutdown, 6 corresponds to reboot, 1 or 2 is a single-user mode for maintenance and 2 or 3 corresponds to normal, multi-user operation. That said, the best place to look for the interpretation of run levels is a file "/etc/inittab".

Normally all of this is documented as "man" pages on your system. You should be able to run a command from the shell like:

man init

to learn precisely how your computer goes through its startup process.

Answer 3

sure, it particularly is referred to as twin boot. purely use a partition enhancing software to place in abode windows on one (NTFS), Linux on the different (ext3 filesystem) and turn area for Linux. warning: lower back up your records in the previous screwing with partitions.

Answer 4

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