Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »

Posts by Matthias Braun‭

11 posts
77%
+5 −0
Q&A Get current server of pacman

with pacman --debug We can display the mirrors that pacman uses with the --debug option. For example, when running pacman --debug -Sy, pacman will write lines like these to standard error: debug...

posted 3y ago by Matthias Braun‭  ·  edited 3y ago by Matthias Braun‭

Answer
77%
+5 −0
Q&A Reverse shell with named pipe and netcat

This blog post describes a privilege escalation, exploiting tar's --checkpoint-action option. The privilege escalation is used to solve a TryHackMe challenge. The root user calls tar via cron whi...

1 answer  ·  posted 3y ago by Matthias Braun‭  ·  last activity 1y ago by Kamil Maciorowski‭

Question shell networking
75%
+4 −0
Q&A Close all desktop notifications

I'd like to hide/dismiss/remove all the notifications that applications like Signal have created. I know I can create notifications with, for example, notify-send -t 10000 "🤖 Here goes my message"...

1 answer  ·  posted 3y ago by Matthias Braun‭  ·  last activity 5mo ago by Quasímodo‭

Question libnotify
75%
+4 −0
Q&A Debug NetworkManager with GDB

I'd like to debug NetworkManager by stepping through it using GDB. I assume I'll have to compile NetworkManager from source to get debug symbols since file /usr/bin/NetworkManager indicates that th...

1 answer  ·  posted 1y ago by Matthias Braun‭  ·  last activity 10mo ago by Matthias Braun‭

75%
+4 −0
Q&A Debug NetworkManager with GDB

Note that if you want to debug the currently installed version of NetworkManager, you don't have to compile NetworkManager yourself. Instead, make GDB download symbol files via debuginfod. You can ...

posted 1y ago by Matthias Braun‭  ·  edited 10mo ago by Matthias Braun‭

Answer
71%
+3 −0
Q&A Get current server of pacman

How do I get the URL of the remote repository that pacman uses to download packages? I know that I can tell pacman which server to use by editing /etc/pacman.d/mirrorlist. But in my case, all of t...

1 answer  ·  posted 3y ago by Matthias Braun‭  ·  edited 3y ago by Matthias Braun‭

Question arch-linux
71%
+3 −0
Q&A Close all desktop notifications

While there doesn't seem to be a general command like notify-send to hide all notifications, we can use features of our specific notification daemon, like mako in this case, to hide all notificatio...

posted 3y ago by Matthias Braun‭  ·  edited 3y ago by Matthias Braun‭

Answer
71%
+3 −0
Q&A Why is 32768-60999 the default for local/ephemeral ports?

The local port range on my Arch Linux installation is 32768-60999 according to cat /proc/sys/net/ipv4/ip_local_port_range Wikipedia states that this range is "used by many Linux kernels" and th...

0 answers  ·  posted 5mo ago by Matthias Braun‭  ·  edited 5mo ago by Michael‭

Question networking ports
66%
+2 −0
Q&A How is the IPv6 link-local address calculated?

I was told that an IPv6 link-local address — typically starting with fe80:: — is derived from the interface's MAC address. Here are some instruction on how to do the conversion. But the conversion...

1 answer  ·  posted 1y ago by Matthias Braun‭  ·  last activity 1y ago by Matthias Braun‭

Question networking ipv6
66%
+2 −0
Q&A How to show motherboard model?

Try reading the files in /sys/class/dmi/id/, some of them don't require root privileges. For example: board_name board_vendor

posted 5mo ago by Matthias Braun‭  ·  edited 5mo ago by Matthias Braun‭

Answer
60%
+1 −0
Q&A How is the IPv6 link-local address calculated?

It's NetworkManager that sets the IPv6 link-local address and per default it doesn't use the conversion from MAC to IPv6 address of that converter, called modified EUI-64. As mentioned in the linke...

posted 1y ago by Matthias Braun‭  ·  edited 1y ago by Matthias Braun‭

Answer