3
votes
1answer
134 views

What's are the technical differences between “chmod -w file” and “chflags uchg file”

BSD/MacOS question. chmod -w file will remove all the write permissions from file chflags uchg file will set the user-immutable bit (aka "Locked" bit) on file Beyond the obvious statement of ...
0
votes
1answer
291 views

Cannot access FreeBSD 8.2 client in VirtualBox from host browser

So, on my MacBook I have installed VirtualBox because I want to develop a web app that will be running on FreeBSD OS. I have installed FreeBSD 8.2 inside virtual PC I have created in VirtualBox. I ...
4
votes
3answers
6k views

What does kill -3 mean?

I know kill -9 mean, but anyone can explain what does kill -3 mean? Any special signal it sends out?
1
vote
0answers
355 views

Install4j, how can I fix “Exception in thread ”main“ java.lang.NoClassDefFoundError: com/install4j/runtime/launcher/Launcher”

I've just downloaded install4j version 5, as my previously working version 4 no longer works with my new JRE, but now I can't get it to do anything other than this: Exception in thread "main" ...
7
votes
2answers
6k views

what does the @ symbol mean in ls -l directory listing? [duplicate]

Possible Duplicate: ls -la symbolics… what does that last symbol mean? When I run ls -l on my mac I see two .yml files: -rw-r--r-- 1 aa staff 6 Apr 15 05:50 s1.yml -rw-r--r--@ ...
6
votes
2answers
1k views

What does the command CD do?

Not realising I had caps-lock on, I typed CD into the command prompt on my mac. Surprisingly, it didn't error. which CD shows me /usr/bin/CD. And if I examine that file, it looks like this: ...
21
votes
2answers
10k views

How to use command line whois for “spam infected” domains like apple.com?

In short: is there any way to get the full whois-details for domains like apple.com, using the command line on Max OS X? Running whois on the command line for, for example, apple.com is like ...