Posted on in System Administration
Viewing and changing the time zone in Mac OS X via the command line uses the systemsetup command:
$ sudo systemsetup -gettimezone
Time Zone: US/Eastern
$ sudo systemsetup -listtimezones
<snipped>
$ sudo systemsetup -settimezone US/Central
Set TimeZone: US/Central
$ sudo systemsetup -gettimezone
Time Zone: US/Central
This command is available both …
Posted on in System Administration
I recently needed to archive a bunch of old home directories on a CIFS share mounted on my Windows XP virtual machine. I wanted each home directory to be archived independently so that I would have lots of smaller zip files rather than one huge one. Additionally, maintaining the directory …
Posted on in System Administration
Network Appliance (NetApp) advanced single-instance storage (A-SIS) deduplication is a free technology that ships with every NetApp filer. The technology works at the block level to efficiently compress volumes so that you can get more data in a limited space. All the deduplication setup and maintenance operations are controlled with …
Posted on in System Administration
One of the suggestions for improving the performance of your website is to properly set the Expire and Cache-Control headers of the HTTP response for images. Since images rarely change, the Expire time should be set far in the future. This ensures that web browsers will attempt to retrieve the …
Posted on in System Administration
The default username and password for all versions of Cisco Access Registrar (as of version 5.0):
Username: admin
Password: aicuser
Perhaps this will save you a little time someday.
Posted on in System Administration
Note: This post is a natural continuation of my post Command Logging is Vital to System Administration.
The primary purpose of sudo is to allow system administrators to execute
commands as the superuser (AKA root). It allows a group of people to manage a
system without the hassle of keeping …
Posted on in System Administration
If you're using Red Hat Enterprise Linux (RHEL) or one of it's variants (CentOS,
etc.), you may have noticed that using a non-standard document root for your
Apache-based web site results in a DocumentRoot does not exist warning if
the directory exists. The most likely cause of this problem is …
Posted on in System Administration
If you have an interest in information security from a technical or managerial point of view, check out Principles of Information Security. It does an excellent job of presenting material for both audiences.
If you have other vendors you would like to see on this list, send me a message …
Posted on in System Administration
Previously, I mentioned that I was unable to remove the FAX= portion of the string produced by Cisco's $s$ (or $d$) macro in a T.37 store and forward fax configuration. That's still the case. I have found no way of doing this inside IOS. If it's possible, I've …
Posted on in System Administration
I use screen for various purposes. It's nice to be able to sit down at a different terminal and attach to my same session, for example. I also occasionally run some long-term commands that will blow up if my session is disconnected. The one thing I need to do with …
