DISCLAIMER: If you expect to find something interesting here, better come back in yet another few months. This is work in progress and still not very far yet.
List of most (all?) JVM options (Solaris, Linux).
Keep in mind:
It's spelled "Mac O-S-Ten", not with a literal "X". Its predecessor was Mac OS 9.
Described here: http://mactechnotes.blogspot.com/2005/09/mac-os-x-as-nfs-server.html
On the homepage of Dan Frake's Book "Mac OS X Power Tools" is a very useful list of keyboard shortcuts.
Hold down these keys immediately after poweron to enjoy their magic:
| Key | Function |
|---|---|
| C | Boot from CD |
| N | Boot from Network |
| T | FireWire Target Disk Mode |
| Cmd-V | Verbose startup |
| Cmd-S | Boot Single User |
| Cmd-Opt-P-R | Reset Parameter RAM (PRAM) |
| Opt | Startup Manager |
| Cmd-Opt-O-F | Enter commands after starting up in Open Firmware |
Problems? Go Troubleshooting Your iPod!
Be warned, though: The Key Combinations mentioned there apparently refer to the iPods 1G, 2G and 3G.
The iPodLinux Wiki has a more complete list of Key Combinations.
By the way: According to the HDD S.M.A.R.T. data, after using my Photo for about half a year, the poor little fella counted 226 hard disk starts/stops.
Simple command line interface to control iTunes. May be useful if you want to control iTunes from SSH sessions or shell scripts.
Currently support the operations next, prev, play, stop.
Mac OS X only -- Objective-C code using Cocoa's NSAppleScript.
SLAs (Service Level Agreements) usually give a guaranteed availability in percent per year.
99% sounds nice, doesn't it? Well, there is a HA-Calculator available to make you aware of how much this really is.
There's what seems to be a pretty nice guide at unixwiz.net explaining all the words and headers and ...
GBDE is FreeBSD's (GEOM-based) implementation for encrypting whole disks / partitions. There is an interesting paper that discusses human and administrative issues as well as the cryptography used. It provides an analysis of possible attack scenarios.
vsftpd supports SSL; here is an example configuration file that provides SSL support and allows login based on system accounts and doing appropriate setuid()ing and chroot()ing.
lftp supports SSL but unfortunately completely ignores the server's certificate by default. Setting ftp:ssl-force, ssl:verify-certificate and an appropriate ssl:ca-file should make you feel much safer. If necessary, you can also point to a CRL file.
As IPv4 reverse DNS delegation is technically limited to octet boundaries (/8, /16, /24), you cannot really delegate for smaller networks (such as a /27). The trick is to use CNAMEs and delegate single labels; this is defined in RFC 2317.
Questions? - Men & Mice provide an extensive glossary, a FAQ and some other interesting things at The DNS Place.
Generating Base64 string for use with AUTH PLAIN:
perl -MMIME::Base64 -e 'print encode_base64("\000username\000password")'
That is your username and your password together with a leading zero-byte and a zero-byte as separator. Thanks to this site.
Using UUCP for systems that aren't connected 24/7 to the internet has a number of advantages over the "classic" fetchmail + local MTA setup, including:
Using sendmail as base, the following configuration can be taken as an example. hobbit.neveragain.de is the internet-connected MTA and dottie.neveragain.de is the laptop that polls and sends its mail via UUCP.
On hobbit.neveragain.de, we need in sendmail:
/etc/mail/mailertable: dottie.neveragain.de uucp-dom:dottie /etc/mail/relay-domains: dottie.neveragain.de
On dottie.neveragain.de, we need:
/etc/mail/sendmail.mc: define(`SMART_HOST', `uucp-dom:hobbit')
Both machines obviously need MAILER(uucp) in their mc file. Depending on defaults and file locations, it may be necessary to define(`UUCP_MAILER_PATH', `/usr/local/bin/uux').
Configuration usually lives in /etc/uucp (or in FreeBSD 5.X, for example, in /usr/local/etc/uucp [1]).
The interesting files here are merely call (only needed on dottie), config, passwd (only needed on hobbit), port and sys. There are example files available here.
Please note that the username (on hobbit) needs to be there as a UNIX user as well. Typically with /var/spool/uucp as default (dummy) home directory and /path/to/uucico as shell.
Now you should be ready: running /path/to/uucico -Shobbit on dottie will connect to hobbit and send/receive any queued mail on both sides. Run this from cron as needed.
UUCP log files may have been changed by your system to go to /var/log/uucp/ or you might find them in their default location in /var/spool/uucp/.
| [1] | UUCP was removed from the base system in 5.X; install the net/freebsd-uucp port and expect everything in /usr/local. |
Inline PGP is outdated and should not be used anymore. PGP/MIME is the Way of doing things.
There are procmail recipes that transform incoming inline PGP messages to PGP/MIME so your MUA won't have any trouble with it:
For mutt:
See here: "Active FTP vs. Passive FTP, a Definitive Explanation".
It also summarizes the needed firewalling rules for each type.
The world's text editor for real men. If you're not a guru yet, there a pretty handy quick reference out there.
Hate HTML? Love plain text? Want to produce nice HTML from well readable (and writable) text files? Try reStructuredText! See links at the footer of this page - it's made with reST.
The Apple iPod (most models, as far as is known), when connected via USB to a FreeBSD since at least the 5.x series, will be recognized as umass(4) device but the kernel won't create the corresponding da(4) device so it can be accessed. Attempts to camcontrol(8) the device will hang. Eventually the system will freeze.
(NAME HERE) has located the problem on NetBSD and sent a patch that seems to work well on FreeBSD, too.
You can get the patch here. It optionally disables a short code block in src/sys/dev/usb/usb_subr.c that itself is a hack for other USB devices. Apply it and add to your kernel configuration:
options USB_IPOD_HACK
Then recompile and hope that it works.
Some more or probably rather less interesting measurements I have taken recently - at home - can be found here.
function lsd() {
local IFS="/"
local LSD
LSDIN="`pwd`"
for f in $LSDIN; do
if test -z "$f"; then
ls -ld /
else
LSD="$LSD/$f"
ls -ldF "$LSD"
fi
done
}
$NeverAgain: www/tech.neveragain.de/index.rst,v 1.49 2007/10/19 09:16:44 amf Exp $