5,712 reputation
11333
bio website inspirehep.net/…
location Duchy of Grand Fenwick
age 43
visits member for 5 years, 5 months
seen yesterday

Experimental nuclear and particle physicist. These days I'm teaching, but I've spent a lot of time on nucleon structure in fixed target electron scattering and neutrino oscillations using reactors and beam sources.


Dec
9
comment How do I complete file paths in emacs?
@Zeynel Works fine for me in Mac OS, too. Either with the Apple installed version or the homebrew version. Also worked with the fink version on my older machine.
Jun
3
comment Why is serial data transmission faster than parallel?
Cross-talk reduction techniques have been known for decades, but as noted in the comments to the questions they introduce additioanl costs, and some of them make the synchronization problem worse (twisted pairs with different twist-ratios have slight variations in impedance which means slight variations in transmission speeds, and ...).
Mar
29
comment How to know the process PID in linux machine
Can't help you much with Java. There are at least two older Stack Overflow threads on the subject, but neither has a really good answer.
Mar
25
comment Hide dot and dotdot (“./”, “../”) directories in NERDTree gVim
A feature taken intact from earlier file systems and on display in unix. Not sure if it originated with unix or comes from even earlier in the history of computing (multics, maybe?).
Feb
19
comment I just ran rm /* accidentally, any fix?
Of course you need to be able to stop using and unmount the affected volume as soon as possible if you want to go this route.
Jan
31
comment How do I physically prevent people from unplugging an Ethernet cable?
"Cable ties are a great idea, but they can be easily cut with scissors or a knife. " If you assume users with knives to hand (you should, I have one more or less all the time) then these same users can as easily circumvent this as the cable tie: tip goes in, cable comes out. Perhaps more easily as the motion to release the jack is small and require no appreciable strength.
Dec
31
comment is !5 supposed to make mac's terminal say things?
Search the bash manpage for "HISTORY EXPANSION"...
Aug
21
comment How can I edit a file if there is no vi, vim, joe, etc?
You haven't said if ed is present or not...
Aug
6
comment Is a process PID guaranteed to stay the same as long as the process doesn't die?
That is, of course, strictly true, but that simply reflects the definition of "process" that the OS uses. The user will see a continuity of state with a changing number, and if she was counting on the presence/absence of the PID to determine if some state was present on the machines this would be a problem. That's why I called the behavior malicious.
Aug
5
comment Is a process PID guaranteed to stay the same as long as the process doesn't die?
Well, a malicious programmer can break the guarantee, but this is generally true of well behaved programs.
Jun
13
comment Remove new tab with most visited websites in Firefox
Thank god. That is absolutely the most bletcherous "feature" I've been subjected to as an "upgrade" in ages.
May
7
comment What is the ⎋ key?
That's Apple for you: breaking tradition to get a more culturally neutral iconography (i.e it means "escape" without be spelled as abbreviated English). Again.
Apr
17
comment Prevent write access for root in home directories
In principle this should be possible with access control lists enabled and no root user (i.e. you set up specific administration users for various functions but no account with uid 0), but it would require very careful construction and a probably be a maintenance nightmare.
Mar
28
comment Is Unix not a PC operating system?
Windows in various incarnations, OS/2, various DOS's (not just the MicroSoft ones either), BeOS, Linux, FreeBSD, NetBSD, OpenBSD, and I know I've missed some. The problem with "Unix" is that it is ill-specified, but then so is "PC".
Mar
26
comment Replacing a Macintosh SE hard-drive
Note that though the standard install didn't do it you could partition large drives. More partitions on a large drive would mean smaller blocks in each partition.
Feb
11
comment Is there something like hardlinks that split into separate files on modifications?
The general scheme is called "copy on write". I am not aware of any file systems that do that, but it might help with searching.
Feb
5
comment Linux command line argument variations
"widget gets the argument -fizz or --fizz exactly as it is written" Well, after alias substitution, variable substitution, glob expansion and history substitution.
Jan
20
comment Are there ASCII characters that have the same keyboard input for both PC and Mac?
Er..."a" is a character from the ASCII set as are "|", "2", "Q" and "%". Are you asking about non-printing characters? There are better ways to strengthen a password than that, and they are less prone to weird system dependencies.
Jan
20
comment Are there ASCII characters that have the same keyboard input for both PC and Mac?
I don't know the Windows way, and the "same purpose" comment was intended at a pretty high level: to get characters which don't have a simple representation on the keyboard, and as an alternate shifting key for programs that want a lot of hot-keys.
Jan
20
comment Are there ASCII characters that have the same keyboard input for both PC and Mac?
The option key on the Mac serves roughly the same purpose as the alt key on a Windows box (i.e. option-u, u makes ü, option-s makes ß, option-`, a makes à, etc...), though they certainly don't map precisely together.