What are the Different Signals in Linux and why?

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Surender Reddy

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hi,

I started working on linux based OS Ubuntu 14.04.4.
I found that there are 64 signals.
why the different signals available in linux?.
How can i get functionality of all the signals?
suggest me some e-books or links
 

I have no idea what 'signals' refers to. Can you supply a link, or quote the source?
 

Signals are used to generate interruptions for the processes like abort, wait, interrupt, kill, delete, suspend etc.
In these 64 signals, first 32 signals are used to generate the interruptions.
use the bellow command to view the list of signals, enter in terminal

kill -l


and open manual page for each signal description
ex: man abort
man kill
 

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