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From: francus@cheshire.columbia.edu.UUCP
Newsgroups: comp.unix.questions,comp.unix.wizards
Subject: Re: core dumps life-after-death
Message-ID: <4791@columbia.UUCP>
Date: Tue, 7-Jul-87 09:24:31 EDT
Article-I.D.: columbia.4791
Posted: Tue Jul  7 09:24:31 1987
Date-Received: Thu, 9-Jul-87 06:42:10 EDT
References: <276@frc.UUCP>
Sender: nobody@columbia.UUCP
Reply-To: francus@cheshire.columbia.edu.UUCP (Yoseff Francus)
Distribution: comp
Organization: Columbia University CS Department
Lines: 56
Keywords: resurrection life-after-death coredumps etc
Xref: utgpu comp.unix.questions:2781 comp.unix.wizards:2904


>	In a similiar blood vessel, On our Pyrimad (sysV+4.2BSD)
>we have a selection of signals, ie ...
>HUP INT QUIT ILL TRAP IOT EMT FPE KILL BUS SEGV SYS PIPE ALRM TERM 
>STOP TSTP CONT CHLD TTIN TTOU TINT XCPU XFSZ 
>However on microport(sysV) many of these dont exist. The ones
>Id like are TSTP STOP CONT. How do you "stop"/suspend a process
>in sysV?.
>
Actually, on sysV there is no job control like there is under BSD,
though a number of people have suggested possible ways of implementing
it.  You could call sleep or alarm within a program to "suspend" it;
you might be able to use one of the user defined signals, and have
a process go to sleep when it received that particular signal.
>	And finally, how does one find out about "the kernal"
>without having a source license? Are there any good books that I 
>should be ordering? The kind of books that out line how to get
>the best out of unix, and tricks of the trade etc...
>
>Ive seen some good ones, like
>	Advanced Unix Programming (Marc J. Rochkind) (great book!)
>	The Minix book was great also, but its not Unix.	
>	
>	Just thought Id ask... 
>
>	Neville
One of the best that I have seen is by Richard Back, The UNIX operating
System - if that name isn't completely correct its real close. It's
an exceptional book, and for anyone trying to learn about the kernel
highly recommended.  Also the XINU Operating Sytem by Comer is a book
that might be useful as well; it's not about UNIX per se but uses alot
of the ideas from UNIX. 

>
>BTW. If only(and any) of the big boys can afford to have a 
>Unix source license, I cannot see the logic in making the 
>source so sacred. It just means that the little (and interested)
>guys go without and have to wait for their hardware suppliers
>to patch found(and annoying) bugs.

You could use adb :-) :-) :-) :-)


Yoseff





******************************************************************
yf
In Xanadu did Kubla Khan a stately pleasure dome decree
But only if the NFL to a franchise would agree.

ARPA: francus@cs.columbia.edu
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