September 2001
Intermediate to advanced
580 pages
12h 30m
English
book
Linux for IBM eServer zSeries and S/390: Distributions
by Michael MacIsaac, Ronald Annuss, Wolfgang Engel, Chris Gombola, Timothy Nunes, Mark Post, Don Stubbs, Egon Terwedow, Craig Vernon
Content preview from Linux for IBM eServer zSeries and S/390: Distributions
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Chapter 19. Debugging and problem diagnosis 369
Using the previous date example:
# strace date 2>&1|grep open
open("/etc/ld.so.preload", O_RDONLY) = -1 ENOENT (No such file or direct
open("/etc/ld.so.cache", O_RDONLY) = 3
open("/lib/libc.so.6", O_RDONLY) = 3
open("/etc/localtime", O_RDONLY) = 3
#CP TRACE SVC 5
# date
date
-> 40013AA0" SVC 0A05 -> 00016060' CC 0
-> 40013AA0" SVC 0A05 -> 00016060' CC 0
-> 40013AA0" SVC 0A05 -> 00016060' CC 0
-> 400C0588" SVC 0A05 -> 00016060' CC 0
Using the trace feature of VM, you can trace events beyond system calls (such
as instruction execution, storage alteration, register alteration, and I/O activity). In
addition, a combination of up to 255 of these ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.