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Jan
18
comment Is the “$?” (dollar-question mark) variable available only in the Bash shell?
And many scripting languages: Perl, Ruby, etc.
Dec
22
comment automatically redirect output to /dev/null
I'm struggling to understand the question.
Dec
7
comment Copy specific file type keeping the folder structure
'{}' works just as well
Nov
15
awarded  Autobiographer
Oct
20
comment Why do I have to use sudo for almost everything?
Do you not spend most of your time using the software you have installed? That shouldn't involve sudo. If not, why are you installing it?
Sep
14
comment Why does iptables accept packets on a given port, when it is closed?
Well it is a risk. Because it's not dropping it like packets on other ports, an attacker can deduce that there may be something listening there in future, and continue periodically checking whether there is yet. If all other ports are blocked, then checking this one reveals that you exist at all.
Jul
7
revised What is so special about Linux permission 004?
not a mask
Jul
7
revised What is so special about Linux permission 004?
remove unnecessary step, making the numbering correct again
Jul
7
suggested approved edit on What is so special about Linux permission 004?
Jul
7
suggested approved edit on What is so special about Linux permission 004?
Jul
7
comment What is so special about Linux permission 004?
The third step is writing, not reading.
Jun
30
revised How to create an unprivileged user in CentOS?
-r implied -M and ignores -d
Jun
30
suggested approved edit on How to create an unprivileged user in CentOS?
Jun
18
comment Do I need a computer science degree to have a successful career in Linux?
Computer Science is almost completely irrelevant to being a Linux sysadmin.
Mar
30
comment Is using “while true” to keep a script alive a good idea?
But then what if the bash script crashes or is killed?
Oct
10
answered Why I can't set on the Debian 64 bit on the Virtual Box
Jun
12
suggested rejected edit on What is the difference between running “bash script.sh” and “./script.sh”?
May
12
suggested rejected edit on Why *not* parse `ls`?
May
9
awarded  Critic
Jan
3
comment How to trigger a system self destruct with a certain password is entered
If it's the NSA you're worried about then dd if=/dev/urandom of=/dev/$HOME isn't going to do much good. Even assuming they're stupid enough to use the operating system instead of removing the disk and reading it directly, there are forensic recovery companies that can get data from a disk that's been overwritten and physically burned.