Linux Facts

Question 1

What are environmental variables?

Answer 1

Process wide variables built into the system and interface controlling look and feel for the user.
They are inherited by any child shell or process

Question 2

What are Shell variables

Answer 2

Only valid in current shell and typically lower case.

Question 3

How do you find out what version of the kernel you are running?

Answer 3

uname -a

Question 4

How do you view all your kernel modules

Answer 4

lsmod
In /lib/modules
Or /user/lib/modules

Question 5

How to find more information about a particular kernel module?

Answer 5

modinfo MODULE (using the name from lsmod)

Question 6

How to install or remove a kernel module?

Answer 6

insmod
rmmod