All Questions
240,438
questions
14
votes
3
answers
5k
views
What does it mean when code is executed in [kernel|user] mode?
What does it mean when code is executed in kernel or user mode?
- 4,185
48
votes
9
answers
7k
views
How could I remember how to use redirection?
I know what
program > /dev/null 2>&1
does. It redirects the output to /dev/null and 2>&1 means to redirect the error output in the same place where the output is sent.
My ...
8
votes
9
answers
657
views
What is/are the standard CLI program(s) to manage users and groups?
I'm basically asking about user management from the command line (e.g. on a system where there are no graphical tools available). In the past I've used several different programs to add or delete ...
- 1,007
20
votes
7
answers
20k
views
What distributions have rolling releases? [closed]
I was browsing DistroWatch and was looking for a list of distributions that offer rolling releases and a little bit more about them. However, it doesn't seem to be possible to select only the rolling ...
52
votes
7
answers
19k
views
Software developer switching from Linux to OS X, what are the gotchas?
I have used Ubuntu/Fedora/Red Hat/Suse but haven't used OS X at all. If I have to start using OS X regularly, what are the things I should look out for?
Tools I use are GNU tool chain, C++/Boost, etc....
68
votes
9
answers
103k
views
Can we get compiler information from an elf binary?
Is there some chance to know how a binary was built, under Linux? (and or other Unix)
Compiler, version, time, flags etc...
I looked at readelf and couldn't find much, but there might be other ways ...
- 1,444
0
votes
3
answers
3k
views
How can I (and should I) use my Linux file server as a Time Machine backup server for my Macs?
I have two Macs that I'd like to start backing up using Time Machine, but all of my storage is attached to my Linux file server.
How can I use my Linux file server (which happens to be running Ubuntu ...
- 3,282
9
votes
1
answer
6k
views
How do I get a long listing for a single directory?
I want to see a long listing for a single directory. When I type ls -lha, I see this:
drwxrwxr-x 4 username groupname 4.0K 2010-08-05 09:55 files
drwxrwxr-x 7 username groupname 4.0K 2010-08-05 14:...
- 14.5k
44
votes
3
answers
30k
views
Where does Mac OS X come from?
Discussing with Mac owners, I got several versions of where Mac OS X comes from. It is known to have some root in BSD, but how much, and where?
Some say that Mac OS X has a FreeBSD kernel, with all ...
- 1,301
4
votes
3
answers
493
views
Any alternative of "man -a" on UNIX?
man -a <xyz> opens all the man pages one by one which contain xyz.
On my unix servers man -a <xyz> doesn't work.
Is there any alternative for this on unix?
EDIT:
I am on HP-UX. Following ...
- 6,910
65
votes
10
answers
77k
views
Why put things other than /home to a separate partition?
So recently a Debian 5.0.5 installer offered me to have separate /usr, /home, /var and /tmp partitions (on one physical disk).
What is the practical reason for this? I understand that /home can be ...
- 4,528
8
votes
6
answers
21k
views
'kill java' doesn't kill java
I am running debian right now and sometimes I need to kill java manually from the terminal, but when I try kill #pid# or pkill java nothing happens. No console output (ok, that's normal) and java is ...
- 183
37
votes
6
answers
18k
views
How does a unix or linux system work? [closed]
I would like to know how the OS works in a nutshell:
The basic components it's built upon
How those components work together
What makes unix UNIX
What makes it so different from other OSs like ...
- 489
9
votes
5
answers
6k
views
vim on FreeBSD does not react on arrow keys correctly and other vi-like behaviours
I tried to use vim on FreeBSD (via ssh on Linux xterm-compatible terminal). However vim behaves similar to vi out-of-box. For example it does not react on delete key, insert F character instead of ...
- 16.8k
5
votes
1
answer
470
views
Strings enclosed in '' are ignored when using grep
When I tried searching for a string within a file, the results didn't include those that were enclosed in single quotes.
For example:
grep -rn text folder/
The results didn't include strings the ...
paolo granada lim