566 reputation
1412
bio website cheshireeng.com
location Monrovia, CA
age 50
visits member for 5 years, 8 months
seen Oct 10 at 21:51

Engineer, Magician, Jack of all Trades


Sep
19
comment How are r— directory permissions supposed to work on Linux?
I was actively a unix user and developer back in the 80's. I wasn't trying to tell the complete story about what is true today so much as put it in historical context, and expose my amusement that the same conundrum that I faced when first learning unix can both be asked today, and answered by substantially the same explanation I got from local gurus in about 1983. The more things change, the more they remain the same....
Aug
29
comment 50 workstations, 1 .bat file on a network server, will it work?
Note that the task scheduler has a feature to vary the start times of a scheduled job, precisely so that 50 machines don't go off perfectly synchronized. It's in Win7 but not in Win2K; I don't know when it was introduced. If your setup causes you trouble, that is one possible way to mitigate it.
Feb
22
comment Problem running 32 bit app in Win7 x64
+1 Regardless of the assumptions about the original problem, this answer makes a point worth noting, and may explain a pending issue I have with a .NET application after moving everything from 32-bit XP to 64-bit Win7 recently....
Oct
6
comment Why does x86 represent 32bit when x64 represents 64bit?
IMHO, "x86" does not mean (and never has meant) just any generic 32-bit architecture. Daniel's answer below gives the history. There are lots of other 32-bit processors that are both contemporaneous to (or older than) the 80386, and quite a few are still alive and well in the market today. The 68000 family (used in the original Macintosh) is much older than the 8086, for instance. The PowerPC's claim to fame when new was strong emulation support for both x86 and 68K. The ARM is 32-bit, more modern, and quite common as well.
Jul
30
comment How do you test your porn filter
I like this idea... it both proves the filter is in place and that it is current. I'd still like to see an industry agreed URL that will always be blocked, combined with a real page explaining that you shouldn't have been able to see it.
Jul
3
comment What infomation can be had about a USB device that I don't have drivers for?
Class FF is "vendor defined", meaning that only a driver matching the VID/PID pair will work. You'll have to chase down that vendor, and it sounds like you did. :-)
Jul
2
comment cmd.exe: how to start a background process, run some things, stop background process
+1 for the dark side...
Jun
22
comment How should I convert a physical drive to a VHD for use with VirtualPC?
WinImage did a good job of turning the physical drives into VHD files via a USB to IDE cable.
Jun
21
comment How should I convert a physical drive to a VHD for use with VirtualPC?
@Even, too true... but Me has got to be easier to virtualize than a PDP today ;-) I'm not sure how I'd get the disks imaged, for instance. Then there's the 9-track tape to think about....
Jun
19
comment How should I convert a physical drive to a VHD for use with VirtualPC?
That looks like a nice, clean solution.
Jun
19
comment How should I convert a physical drive to a VHD for use with VirtualPC?
The drives are loose on my desk, and I used a spare caddy to verify that I could read them this afternoon...
Jun
19
comment How should I convert a physical drive to a VHD for use with VirtualPC?
I'll take a look at VMWare Converter, that sounds promising.
Jun
19
comment How should I convert a physical drive to a VHD for use with VirtualPC?
@Even, that is a good sign.
Jun
19
comment How should I convert a physical drive to a VHD for use with VirtualPC?
Yup. ;-) It could be worse, I still have a running PDP-11 in the other room that must be at least 25 years old by now...
Jun
19
comment How should I convert a physical drive to a VHD for use with VirtualPC?
All attempts to resurrect the physical system failed. I have both physical drives, and I even know which one was the boot drive... I definitely need a solution that can be done from the disks alone.
Jun
19
comment How do I figure out which file is being executed?
See technet.microsoft.com/en-us/library/cc723564.aspx, about half way down at a heading "Command Search Sequence" for (one version of) the official story. In short, . and PATH are searched in that order, checking each PATHEXT in each folder for a matching file.
Jun
19
comment How do I figure out which file is being executed?
The search order implemented in this perl script matches the documented order found at technet.microsoft.com/en-us/library/cc723564.aspx exactly. The current directory is searched first, followed by each directory in PATH. In each directory, extensions are tried from PATHEXT in the order listed in PATHEXT. It is typical of MS to only barely document the detailed behavior of CMD.EXE.
May
15
comment Biggest command-line mistake?
This would have been ca. 1985, and accessed via dialup or via a RS-232 cable from a clone of a VT-100 terminal. Not a terminal emulator, but an actual terminal. I don't recall csh having name completion at the time... ;-) Today, of course, GUIs and name completion make both of those less risky, and lots of OSs make it a lot harder to create such files without resorting to disk sector editing....
May
7
comment How can you test an external (USB) hard drive?
It may also be possible to run SpinRite on it in the enclosure, if the right drivers can be found for the copy of FreeDOS that hosts the SpinRite executable. GRC claims this is possible, but I haven't done it myself.
May
7
comment Biggest command-line mistake?
Nobody but the OP and the staff moderators can edit the question yet, since the highest rep user is still more than a day's worth of rep below 2000. After that, the edit by several distinct users will apply. But the 30 answers rule should still apply....