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4

Since this is a relatively recent device, it doesn’t have legacy BIOS but UEFI firmware. Unfortunately, UEFI is extremely complex and prone to the strangest errors. For example, a few years ago, Samsung shipped some notebooks which could be bricked by writing too much data into an NVRAM variable, see here and here: [...] There's code in the kernel to ...


3

To demonstrate SELinux's utility in bug detection for third-party / your own developer's code, here's a memory protection test (modifying the first code example here): #include <fcntl.h> #include <stdio.h> #include <sys/mman.h> int main (void) { // open file read-write, get a memory-mapped pointer with private access, write ...


3

Just a guess, but exim might be in a location that is not in your path by default. And if exim is not found a blank message is what your script will produce. When you login, you have a variety of files like .bashrc that add directories to your path. But these config files are not all sourced when cron runs. Try this on the command line... $ which exim ...


2

Download this and then cd into your downloads directory, then type sudo yum install skype-4.2.0.13-1.fc20.i686.rpm and it should be OK.


2

What happens to you is most likely because you don't have Pulseaudio running. Skype versions prior to 4.3 allowed to use ALSA directly but this is not the case any more. Microsoft have dropped the support for ALSA since version 4.3. You skype client only shows virtual devices, because it does not detect an instance of Pulseaudio running and cannot gain ...


1

I'm betting your CentOS server is accidentally or misconfigured to use your home DSL-router's gateway IP address. Root cause is DHCP settings. Possibly your IP address is statically configured. Show us output of ifconfig -a and route -n and compare the output to a functioning host on your network (IP address, default gateway).


1

Judging from df -h output you dont have LVM partitions. You might be over thinking the task. Whats the output of fdisk -l? If your host simply added 300GB to /dev/xvda2 all you need to do is grow the partition with fdisk and the filesystem using resize2fs (sorry cant leave comments yet)


1

This clearly demonstrates a MAC policy where an equivalent DAC could have been bypassed on a base install of CentOS 7. By default (in CentOS at the time of writing) unprivileged, non-system users are logged in as the 'unconfined_u' role. However we can change our system so that our unprivileged user 'alice' is placed into the 'user_u' role instead. The ...


1

And now, the systemd answer. It has been almost four years since these questions and answers, and the world has changed whilst they have not. Since version 7, CentOS has used systemd. Ubuntu is mentioned in the question and in comments. Since version 15, Ubuntu has used systemd too. Although one can use System 5 rc scripts under systemd, the scripts in ...


1

Try control + shift + c for copy and for paste try control + shift + v


1

Unless you have changed your policies in the Boolean tab of system-config-selinux (or in /etc/selinux/policy), then the default should respond to the following (N.B., you may also want to install setroubleshoot for a deeper dive): mkdir -m 755 -p /install/ks cp /root/anaconda-ks.cfg /install/ks chmod 644 /install/ks/anaconda-ks.cfg Then, ...


1

Chances are that in /etc/resolv.conf you don't have any nameservers set, in which case you want to do: vim /etc/resolv.conf and add: nameserver 8.8.8.8 nameserver 8.8.4.4 save it, and once back at the shell do: sudo reboot now to reboot and you should have internet access


1

It's a DNS issue, obviously. You cannot edit /etc/resolv.conf because puppet does so based on config management, so you need to tell puppet a set of working DNS servers to use. Your ISP probably has one, but here's a short list of servers that should be good DNS servers, and easy to remember: 4.2.2.2 4.2.2.1 8.8.8.8 8.8.4.4 Depending on the setup, the way ...


1

Well, this is an extremely open question. I assume every answer you get will be different. Hence, these answers are, unfortunately, opinion-based as well as based on experience. My suggestion here is definitely iptables. A decent guide for setting up a firewall can be found here, at the arch linux wiki. This firewall will simply block everything from ...



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