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Questions specific to the CentOS Linux distribution. Use this tag if your question relates to how the CentOS distribution affects your problem; do not use it if you just happen to be using CentOS and your question is about a specific configuration detail or syntax.

2
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Cent OS is based on Red Hat Enterprise Linux and the main goal of a distribution produced for enterprise customers is to provide robust, stable and reliable OS and system software. Major releases usu …
answered Jun 23 '15 by Anthony Geoghegan
0
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: [sda] Sense Key : Aborted Command [current] [descriptor] May 26 14:05:21 centos kernel: Descriptor sense data with sense descriptors (in hex): May 26 14:05:21 centos kernel: 72 0b 00 00 00 00 00 …
answered May 26 '15 by Anthony Geoghegan
3
votes
The transient hostname is initialised at startup to the static host name but it can be changed by DHCP or mDNS. DHCP If you’re using DHCP, you should check that the wrong hostname hasn’t been set in …
answered Sep 10 '15 by Anthony Geoghegan
4
votes
following output (from a CentOS 6 box) shows that two lines are used to list the device-mapper-persistent-data.x86_64 package: device-mapper-libs.x86_64 1.02.95-3.el6_7.4 @clearos-verified-updates … line up). yum list installed | sed '1,2d;/^ /d;s/\..*//' >| installed.yum Now, we can use the diff command to compare the output of the two files. Here’s the results from the CentOS 6 box: # diff …
answered Dec 15 '16 by Anthony Geoghegan
4
votes
In Red Hat-based systems, most services which use networking (including MySQL) load the networking configuration into shell variables by sourcing /etc/sysconfig/network. This configuration file contai …
answered Jul 6 '15 by Anthony Geoghegan
3
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export DISPLAY=:0.0 xhost localuser /usr/bin/firefox Just from looking at the above cron command, I can see why it won’t work. The usage for the export command is export name[=word]... In POSIX …
answered Jun 9 '16 by Anthony Geoghegan
0
votes
-createprofile is not a valid command-line argument for starting Firefox. To create a new profile, you start by launching the Profile Manager by running firefox --ProfileManager. If you already have a …
answered Mar 15 by Anthony Geoghegan
2
votes
Out of interest, I’d first try removing the package using the rpm command: rpm -e libstdc++ However, I suspect that rpm’s internal database is corrupted and the above command won’t work so I’d then …
answered Nov 16 '14 by Anthony Geoghegan
28
votes
and the FQDN. Name Resolution In modern operating systems such as RHEL 7, the hosts entry in /etc/nsswitch.conf is used for resolving host names. In your CentOS 7 machine, this line is configured … as (default for CentOS 7): hosts: files dns This means that when when the resolver functions look up hostnames or IP address, they first check for an entry in the /etc/hosts file and next try …
answered Oct 31 '15 by Anthony Geoghegan
3
votes
, backdoors and various other exploits. It should be installed on a clean system with a nightly cron job to scan system binaries for differences-- and warn if any were found. With a CentOS system, it …
answered Jan 23 '15 by Anthony Geoghegan