How does NAT reflection (NAT loopback) work?
I use the auto generated rules that come from OpenWRT as an example of NAT reflection (NAT loopback).
Unix & Linux
Meaning of “:-” in bash
From bash reference manual:
Bash script wait for processes and get return code
I am trying to create a script which will start many background command.
For each background command I need to get the return code.
Is there any software that can help me reinstall software after fresh install
Every now and then I need to reinstall Linux system (mainly Ubuntu based distros). The process of reinstalling every piece of software I need is really boring and time consuming. Is there any software that can help me out? For Windows there is Ninite, is there something else for Linux?
What happens after a page fault?
When a page fault occurs in a Linux system, the interrupt-handler has to figure out the reason why the page fault happened. But how ?
find and remove duplicates in a directory
I have a directory with multiple img files and some of them are identical but they all have different names. I need to remove duplicates but with no external tools only with a bash script. I’m a beginner in Linux. I tried nested for loop to compare md5 sums and depending on the result remove but something is wrong with the syntax and it doesn’t work. any help?
How to change MySQL ‘root’ password using MySQL v5.7?
Current Environment :
What does “${-#*i}” != “$-” mean?
In /etc/profile I see this:
~/.inputrc file not sourcing correctly
I have this ~/.inputrc file that I created for certain key bindings.
progress information via pv for directory copy
I need to copy a very large directory (talking in terabytes here) and want to monitor the progress.