If you want to lock some packages on your debian PC, then you can use next variants. As told in debian online manual (http://www.debian.org/doc/manuals/debian-faq/ch-pkg_basics.en.html):
“How to prevent a package update in Debian (dpkg, aptitude, dselect). Not for *buntu kids …”Continue reading
When you are running the new servers, the one thing you do not want to do – is upgrade the kernel. Because that is the only Linux update operation that requires a reboot once it is done — and in a production environment you often can’t have downtime.
“Yum: prevent a updating the packages”Continue reading
Download the rpm file from java.com. Install using the rpm command:
rpm -Uvh jre-7u17-linux-x64.rpm
Use alternatives to config:
[root@localhost ~]# alternatives --config java There are 2 programs which provide 'java'. Selection Command ----------------------------------------------- * 1 /usr/java/latest/jre/bin/java + 2 /usr/java/jre1.7.0_17/bin/java Enter to keep the current selection[+], or type selection number:
Select the java you want to use in my case 2. Test using:
[root@localhost ~]# java -version java version "1.7.0_17" Java(TM) SE Runtime Environment (build 1.7.0_17-b02) Java HotSpot(TM) 64-Bit Server VM (build 23.7-b01, mixed mode) [root@localhost ~]#
Create links in the Mozilla Plugins directory:
[root@localhost ~]# cd /usr/lib64/mozilla/plugins/ [root@localhost ~]# ln -fs /usr/java/latest/lib/amd64/libnpjp2.so
There is no specific command on CentOS to set the default route or gateway, there are several ways to do this on CentOS (as there often are). The method I am showing you will work on all versions of CentOS with or without a GUI and involves directly editing the network configuration file using Vim.
Setting default gateway on CentOS first requires us to open /etc/sysconfig/network config file using Vim:
$ vim /etc/sysconfig/network
You now need to add your default GW, if you don’t know the IP of your default GW (aka default route) then you need to ask your ISP / web host or network admin. The example below assumes our default GW is 192.168.0.1
GATEWAY=192.168.0.1
I always append this information to the bottom on the network config file on CentOS.
After adding the default route (GW) you need to restart the networking service using:
# service networking restart
Here is a quick fix-patch for the following warning:
Subroutine SNMP_Session::pack_sockaddr_in6 redefined at /usr/share/perl5/Exporter.pm line 67. at /usr/bin/../lib64/mrtg2/SNMP_Session.pm line 149. Subroutine SNMP_Session::unpack_sockaddr_in6 redefined at /usr/share/perl5/Exporter.pm line 67. at /usr/bin/../lib64/mrtg2/SNMP_Session.pm line 149. Subroutine SNMP_Session::sockaddr_in6 redefined at /usr/share/perl5/Exporter.pm line 67. at /usr/bin/../lib64/mrtg2/SNMP_Session.pm line 149. Subroutine SNMPv1_Session::pack_sockaddr_in6 redefined at /usr/share/perl5/Exporter.pm line 67. at /usr/bin/../lib64/mrtg2/SNMP_Session.pm line 604. Subroutine SNMPv1_Session::unpack_sockaddr_in6 redefined at /usr/share/perl5/Exporter.pm line 67. at /usr/bin/../lib64/mrtg2/SNMP_Session.pm line 604. Subroutine SNMPv1_Session::sockaddr_in6 redefined at /usr/share/perl5/Exporter.pm line 67. at /usr/bin/../lib64/mrtg2/SNMP_Session.pm line 604. Subroutine main::pack_sockaddr_in6 redefined at /usr/share/perl5/Exporter.pm line 67. at /usr/bin/mrtg line 101. Subroutine main::unpack_sockaddr_in6 redefined at /usr/share/perl5/Exporter.pm line 67. at /usr/bin/mrtg line 101. Subroutine main::sockaddr_in6 redefined at /usr/share/perl5/Exporter.pm line 67. at /usr/bin/mrtg line 101.
“Subroutine SNMP_Session::pack_sockaddr_in6 redefined on Centos 6.3 with mrtg”Continue reading