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Old 11-18-2014, 05:00 PM   #1
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Is it true about these tools?

Hi guys,

a friend of mine who works for a big company in london sent me an email recently and told me that if i learn the following tools...or at least half of them i would be able to ace any Linux Engineer is a diagram explaining where the tools fit in. Just thought i would share it with the community, and get some feed possible is it to learn and utilise these tools in a non production environment...HA HA!!! looking at the attachment after actually looks like the London Underground LOL!!!
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Last edited by sigint-ninja; 11-18-2014 at 05:02 PM.
Old 11-18-2014, 05:11 PM   #2
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That's a great guide! Thanks for that.
Old 11-18-2014, 05:38 PM   #3
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I am not clear on what a lot of these tools do so having them all on the one page allows me to read up on them.
Old 11-18-2014, 06:22 PM   #4
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Thanks, that is a simple, useful and clear graphic!

As far as "aceing" any Linux Engineer interview, there is a little more involved in that than memorizing a few commands I think!
Old 11-19-2014, 11:49 AM   #5
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Well, there are a few new ones for me, and probably others besides! Thanks for sharing. If you work through those, studying the man pages and trying them out, you're obviously going to learn a lot. But there'll be a lot of background reading needed as well. I had to look up slabtop and found that it gives you a real-time display of kernel slab cache information. So, the questions are (1) how do you interpret that display and (2) under what circumstances would you need it? If you can answer questions like that about all those commands, you'll really know your Linux.
Old 11-19-2014, 11:56 AM   #6
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Originally Posted by dugan View Post
That's a great guide! Thanks for that.
Yes, it is. So good, I added a subscription, just so I wouldn't lose it.
Old 11-19-2014, 12:29 PM   #7
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thx for sharing the nice pic

most of the tools there are fairly easy to use
strace and latrace will show you exactly what a program calls (strace for kernel calls, latrace for library)
iotop, iptraf, perf will show you performance/io thingies
netstat, ethtool, lsof, pidstat and such will show you the state of things
ptrace is fun

id like to add iftop, that i like more then netstat
atop that can show (and log) most of these things
and the /proc and /sys interfaces that can give plenty of useful information (amongst other things)
Old 11-19-2014, 12:40 PM   #8
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that is definitely a great guide for beginners, im saving the pic myself too.


observability-tools, performance-observability

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