Here is two useful commands to display all the installed packages and version in your RHEL/CentOS Linux system. 1. Display a comprehensive and formatted list using Yum : yum list installed | more 2. Display the list of RPM package with their full name : rpm -qa –qf “%{NAME}-%{VERSION}-%{RELEASE}.%{ARCH}\n” TIP : The suggestion #2 is… Read More »
You can get the SSL certificate informations of a local or remote site using the terminal and OpenSSL with the following command : echo quit | openssl s_client -connect domain.tld:443
Microsoft now provide and allow (officially) direct link for downloading their Windows 10 operating system from their Web site without any subscription. Prior Windows 10, ISO download was reserved to the store purchase and Service Providers Level Agreement (SPLA). Follow this link to get the official Windows 10 release : http://www.microsoft.com/en-ca/software-download/windows10ISO This will allow you to… Read More »
I recently end up with the following error trying to build the R1Soft agent module using “r1soft-setup –get-module” command : Checking if module needs updated Checking for binary module Waiting / No binary module found Gathering kernel information Gathering kernel information complete. Creating kernel… Read More »
One of the interesting and main feature of LVM is the flexibility of shrinking or growing volumes. Follow theses easy steps : NOTE : Steps 1 to 3 are only needed if your physical volume (PV) is full or need more space. You should jump to step 4 if you just need to grow a… Read More »
If you have recently upgraded to Windows 10, you may have encountered the following issue/error message trying to send an email : Sending reported error (0x800CCC13): ‘Cannot connect to the network. Verify your network connection or modem’. You are probably able to receive email without any problem though, the described behaviour is only encountered with… Read More »
Lately, Ubuntu introduced “resolvconf” which manage and maintain the legacy “/etc/resolv.conf” file. As stated in the comment of this file, any manual editing will be lost, so by default you have to use resolvconf to manage it. You will find the following text files under /etc/resolvconf/resolv.conf.d : base : used when no data can be… Read More »
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
Having such issue starting/stopping CSF on RHEL/CentOS 7? # csf -x *WARNING* URLGET set to use LWP but perl module is not installed, reverting to HTTP::Tiny You have an unresolved error when starting csf: Error: /sbin/ifconfig (ifconfig binary location) -v does not exist!, at line 2510 in /usr/sbin/csf You need to restart csf successfully to… Read More »
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 »