NTP Time Drift on ATG Boxes?

Cade asked me to look into five ATG boxes that Ned said were not syncing up with the NTP server correctly.

I pulled all five up and ran date on them. They seemed to be synced, perfectly.

Apparently, they synced after Ned saw the problem.

Starting Off…

To change the sudoers file (and set yourself up as a priviledged user), su to root (su -) will work and edit /etc/sudoers by typing visudo. Hit Shift-G to get to the bottom of the file and go up a few lines to where it says # %wheel all=(all) NOPASSWD: ALL and copy the line (yy in vi) and paste it (p)

RPM
To rpm -ivh to install a package
To upgrade a package rpm -Uvh

To remove a package, rpm -e
To query if a pckage is installed, rpm -q

To query all packages, rpm -qa

YUM for updates (or package management)
Yum is safer to use, rather than rpm

You need to know both.
Yum takes care of dependencies.

Yum search
yum list
yum check-update (to see what needs to be updated)
yum update (to update those packages)
yum update
to update an individual app.

There is a great website for YUM at http://wiki.linux.duke.edu/ManYum

According to http://www.ozzu.com/ftopic69484.html, you NEVER NEVER install core package from source on any RPM based distribution. If you do, you could end up with major upgrading problems. You might end of up overwriting directories that Yum or RPM didn’t expect to be in their paths, etc.

Conv with Av for Bash Scripting

*** hypernayt [d0bbc692@MediaWorks-mikrotik.veracitycom.net] has joined #freebsdhelp

*** Topic is: Skinjob – how do you keep a USB drive in freebsd from going to sleep? By lighting a firewire under its ass!

*** Topic set by Av!avleen@icecream.cake [Fri Jul 13 20:48:04 2007]

*** Channel created on Wed Jun 30 12:02:45 2004

<hypernayt> I have a file on my server that has a list of files on it. Each line has a new filename. What technique can I use to move those filenames in such a way that they are one file after another, rather than in a column?

<hypernayt> Like this: file1 file2 file3

<Av> cat file | xargs echo

<Av> or, for i in `cat file`; do $str = “$str $i”; done; echo $str

<hypernayt> Thanks a ton. I’ll try it out.

<hypernayt> OK, that worked great. What if, after I’ve done that, I want to place a character in front of each of those files, like: *file1 *file2 *file3?

<Av> or, for i in `cat file`; do $str = “$str *$i”; done; echo $str

<Av> that

<hypernayt> Thanks. If I want to learn more about this kind of stuff, where is a good place to start? Is this something that I’d find in a manual on VI, or something?

<Av> ummm probably find yourself a BASH tutorial or some other shell scripting tutorial

<Av> this is shell scripting, not file editing πŸ™‚

<Av> brb

<hypernayt> Huge help. I just got a job where I’ll be working on some *nix servers, so you’ve been a lifesaver. πŸ™‚

<Av> np πŸ™‚

<Av> i take cash, checks and most major credit cards!

<hypernayt> Ha ha. I’ll put it on the Karma Credit Card. You’re awesome.

<zi> i hear all the kids are carding the karmas these days

<hypernayt> Absolutely. It’s the new thing. It’s the new “cheap”. πŸ™‚