Archive | Linux

ntpd, ntpdate, chrony on CentOS

Recently, I'm on a server that chrony just barfs on, so my preferred time mechanism doesn't work. Indeed, ntpdate doesn't work as well. Turns out that ntpdate is obsolete (or being obsoleted). After a lot of nonsense, it turns out that running ntpd from the commandline is possible, as long as it is not currently […]

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Mainstream RHEL Derivatives

Spending time looking into AMI (Amazon Linux), it is as usual with the plethora of Amazon products, sometimes hard to get info about what it is. I take this not as a bad thing (though it does take time) but rather a feature that emerges from the *let's develop lots of stuff all at once" […]

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CentOS Apache MySQL PHP

For a while now, I've been learning the hard way how a lot of configurations published on the Internet are much less effective than their authors purport. First we need to back up to a set of core principles in order to then find the configuration that will work for production servers. Production Server Principles […]

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SCP – Secure Copy

scp, the secure version of cp, aka copy, is pretty great, since it is straightforward to copy one or more files or directories from any one machine to any other machine (and the command could be running on a third machine). SCP Syntax scp (-r = recursive) (-i private key) (user@server:directory/file) or (/local/directory/file) (-i private […]

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Node.js on Centos 7

Node.js on CentOS 7 Other Topics CentOS Linux CentOS Linux Overview CentOS Configuration and Utilities CentOS Security (private link) Applications on CentOS Apache Memcached MySQL Node PHP

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Mobile and Desktop Intel Linux

05-Nov-2016 - Note: I've reached the conclusion that I will entertain no more underpowered devices as they are ultimately so limited their return on investment vastly underperforms overpowered devices. This means chromebooks are no longer acceptabe acceptable. Things will change, but at this point (late October, 2016), it appears that the Skylake processors are horrible […]

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Future of the Desktop

05-Nov-2016 - Note: I've reached the conclusion that I will entertain no more underpowered devices as they are ultimately so limited their return on investment vastly underperforms overpowered devices. This means Intel Compute Sticks are no longer acceptabe acceptable. The Intel NUC is now what I consider to be the future of the desktop. I've […]

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State of Linux 2016

This is meant to be a note, rather than some hazy -- or clear-eyed view. What is interesting to me is the long-awaited 16.04 Ubuntu which promises to have most of the stuff needed for the next few years of tinkering. It is also interesting to see the development of distributions such as ClearOS (a […]

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fuser and lsof

fuser and lsof are two important tools showing which processes are using what files and/or sockets. Fuser is the simpler one focused on finding out what processes are using a given file (or port), while lsof can list processes without specifying, such as all open sockets Fuser fuser stands for file user and lists process […]

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