Linux : Error failed dependencies updating kernel-3.10.63-11.el6.centos.alt.noarch

Having the following error trying to install/update kernel v3.10 from the Xen repository on CentOS 6? error: Failed dependencies: kernel-firmware < 3.10.63-11.el6.centos.alt conflicts with kernel-firmware-3.10.63-11.el6.centos.alt.noarch Well, you are probably trying to install using “rpm -i” command. You should use “rpm -Uvh” instead as followed : rpm -Uvh kernel-3.10.68-11.el6.centos.alt.x86_64.rpm kernel-firmware-3.10.68-11.el6.centos.alt.noarch.rpm

FabricOS : How to remotely backup your Brocade FC switch configuration

Here is how to remotely copy your Brocade device running FabricOS to a remote TFTP server. To copy the currently running configuration : copy startup-config tftp <TFTP_Server_IP> startup-config.cfg To copy the configuration saved to the flash memory : copy run tftp <TFTP_Server_IP> switch-name.cfg To restore the remote config to your device : copy tftp start <TFTP_Server_IP>… Read More »

Linux : How to register RedHat Enterprise Linux

RedHat can be used upon a paid subscription. You have to register your system using the following command in order to use the Yum repositories : subscription-manager register –username <username> –password <password> –auto-attach If by any chance you ran that command in the first place but you had no subscription available in your account, your… Read More »

Networking : IPv6 subnet size reference chart

Here is a quick reference chart on subnet size for IPv6 prefixes : CIDR Number of IPs /128 1 /127 2 /126 4 /125 8 /124 16 /123 32 /122 64 /121 128 /120 256 /119 512 /118 1,024 /117 2,048 /116 4,096 /115 8,192 /114 16,384 /113 32,768 /112 65,536 /111 131,072 /110 262,144… Read More »

Linux : How to install clang on CentOS 7

The EPEL repository provides clang RPM package. So to install clang on CentOS 7, You need to install EPEL first: sudo yum install epel-release Then you can install “clang”: sudo yum install clang After this, you can use clang to compile your program.