linuxconfig | Kali configuration optimized for red teaming | Security Testing library

I have a few rysnc modules setup in /etc/rsyncd.conf file on a server like this:

Context:

I am working on an embedded openwrt on a retry system for http request and certificate peremption checking.

We don't trust our web server and want to make retry GET HTTP on file every days until it's downloaded.

We also want to download files at precise hours.

During regular times, the program is:

• managing the state of Leds and network state
• receive messages from message queues to execute web request and network administration
• It monitors 2 other process one bluetooth and one Zigbee that may crash.
• By the time we go in prod it will probably do other things.

Problematic:

I want to program in C a signal every day to get asynchronous events. So i basically want crontab without crontabs.

The signal I want to use is the ones used in IPC (I don't know other way to create asynchronous behaviours on linux) : https://www.man7.org/linux/man-pages/man7/signal.7.html

I know how to use crontab but i would prefer to do everything in C as it would make my architecture simpler for my coworkers who don't use linux.

• As far as i know crontab don't have a C api.

• I used timers in my code but they don't seem to fit this usage: https://man7.org/linux/man-pages/man2/timer_create.2.html It should be doable to request the date and time from the system and create a timer to fire at the desired hour everyday but I thought there might be an already made solutions on Linux. Something like eventHour(hour, signal, handler).

• I don't have systemd https://linuxconfig.org/how-to-schedule-tasks-with-systemd-timers-in-linux

Question: What is the proper way in C on Linux to get dayly/periodic signal ?

Many thanks,

My GPU is NVIDIA GeForce GT 705. On running ./UE4Editor, the error says "Cannot find a compatibe Vulkan device or driver". So, I tried to install Vulkan following this page Vulkan On Linux . sudo add-apt-repository ppa:graphics-drivers/ppa and sudo apt upgrade are may be correct.

I've tried this description. Installation using snap was successfull, but after configuring Viber, the following error message came:

I am trying to create a mobile application from my angular app and am using cordova for converting the web app to mobile. I had followed all requirements given on the apache cordova official guide and installed Android studio as well using this online guide.

I had also followed this youtube tutorial which explained to easily convert the angular app into a cordova application using these steps:

I am trying to setup a build server in a Red Hat Enterprise Linux 8 (CentoOS 8) virtual machine.

I installed podman by running sudo dnf install -y @container-tools

I then ran sudo podman pull mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim to pull a container image from docker:

Trying to pull mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim...Getting image source signatures
Copying blob e936bd534ffb done
Copying blob caf64655bcbb done
Copying blob 4156e490f05f done
Copying blob 68ced04f60ab done
Copying blob 7064c3d93b4a done
Copying config e2cd20adb1 done
Writing manifest to image destination
Storing signatures
e2cd20adb1292ef24ca70de7abaddaadd57a5c932d3852b972e43b6f05a03dea

This looks successful to me. And if I run it again, I get told that the layers "already exists". But then I run:

I want setup shadowsocks antumatically start at startup on ubuntu 18.04

See this.

My shell is shadowsocks.sh

I installed Python 3.4 with this website. (I installed it with sudo apt-get python3.4)

IT finished without any problems and if I type:

I'm trying to install Openshift 3.11 on a one master, one worker node setup.

The installation fails, and I can see in journalctl -r: