Kevin Keane
  • Member for 6 years, 10 months
  • Last seen more than a month ago
How to manually configure a monitor in CentOS7, attached via KVM?
17 votes

I found the base of the solution here: https://askubuntu.com/questions/186288/how-to-detect-and-configure-an-output-with-xrandr In modern Linux distributions, including CentOS, the xrandr library is ...

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How to configure Centos 7 firewallD to allow docker containers free access to the host's network ports?
6 votes

One reason the accepted solution works for some people but not for others lies in a design issue of firewalld. Firewalld only processes the first matching zone for any connections. It also processes ...

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Naming convention standard for Ethernet and Wi-Fi interfaces on Linux machines
5 votes

One caveat with my answer (applies to most of the others, too): I don't know the purpose of your application. If it is a throwaway application to troubleshoot one particular problem, or to understand ...

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Red Hat 7.4: How to inject kickstart file into USB media for UEFI-only system?
2 votes

I now have completed the process, thanks to @Thomas Schmitt's invaluable tip. Here is the complete process. Overview You must modify three files on the original Red Hat DVD: isolinux/isolinux.cfg ...

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Using openldap authentication only for some users
2 votes

I found two ways to accomplish what I needed. The first was the one outlined by thrig. I had to add each user name individually to /etc/security/access.conf. The second option is to specify an LDAP ...

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How to migrate from CentOS to RHEL?
1 votes

I realize that this question is about an old version of CentOS, but in case somebody is looking for a similar answer today: RedHat now offers a supported migration path from CentOS (and Oracle Linux) ...

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Samba - use LDAP for authentication only?
Accepted answer
1 votes

The answer appears that it cannot be done, at least not without turning password hashing off and severely compromising security. The problem is basically the same that first led to the creation of ...

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logrotate not working
0 votes

There is another question that links to this one as a claimed duplicate, but actually has a very different answer. The answers to this question will only work if Tomcat is run as user "root",...

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logrotate not able to truncate catalina.out - actual answer
0 votes

This happens because the catalina.out file is usually not owned by root, but by a user such as tomcat:tomcat. > ls -lah /log/apache-tomcat/catalina.out -rw-r--r-- 1 tomcat tomcat 105K Nov 4 13:48 ...

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Why should parent process wait (to terminate) until all of its child process terminates?
0 votes

The main reason for this convention is that if the parent process terminates before the children, the children's exit code will be lost and the child process may remain a zombie for a while. After a ...

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lpadmin add a network printer
0 votes

This question is a bit older, and I hope you resolved it in the meantime, but for others who find this question: The problem is likely that the package that contains your PPD file has not been ...

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Ambiguous output redirect
0 votes

The second entry should work fine. The "ambiguous redirect" error sometimes happens if you either have spaces where they shouldn't be, or conversely when an important space is missing. I would ...

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How can I list supported filesystems? More precisely, how can I determine if filesystems such as NTFS are supported?
Accepted answer
0 votes

First off, I would not assume that GParted retrieves a list of file systems from the underlying system. It may simply be a hard-coded list of common file systems. That said, to detect ntfs support, ...

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Issues due to independent concurrent writes to shared memory
0 votes

The problem with these three processes would be that they could clobber each other's data. Your ring buffer has a read index variable, a write index variable, and, say, 10 locations. Let's say the ...

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