It avoids having to reload the favicon every time for those that clear their history after every session and don't have a site bookmarked but visit it often.. While not perfect FF favicon handling is quite robust.
Some sites load favicons using old html methods and some sites load multiple favicons by examining aspects of the user (e.g., browser). The reason for the time delay from what I've read is to improve the performance of the browser. I believe the reason it isn't updated is he visits the site quite often resetting the favicon expiration time and, even though he deletes history, there can be up to a 24 hour delay before the actual favicon is removed from places.sqlite.
The difference between these 2 are, kernel-lt package provides the Long Term Support version of the latest Linux kernel, and the kernel-ml package provides Mainline Stable version of the latest Linux kernel. I will show you how to install both of them, but I will install kernel-ml in this article.
The kernel provided by kernel-ml is more updated than kernel-lt. You can check the version of the currently installed kernel on Cent OS 7 with the following command: You can easily install long term support kernel or kernel-lt package provided by ELRepo on Cent OS 7.
Once the installation is complete, just restart your computer.
When it boots, select the new kernel from the GRUB menu.
To enable the ELRepo repository on Cent OS 7, do: Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * elrepo-kernel: mirror-hk.Available Packages kernel-lt.x86_64 4.4.176-1.el7.elrepo elrepo-kernel kernel-lt-devel.x86_64 4.4.176-1.el7.elrepo elrepo-kernel kernel-lt-doc.noarch 4.4.176-1.el7.elrepo elrepo-kernel kernel-lt-headers.x86_64 4.4.176-1.el7.elrepo elrepo-kernel kernel-lt-tools.x86_64 4.4.176-1.el7.elrepo elrepo-kernel kernel-lt-tools-libs.x86_64 4.4.176-1.el7.elrepo elrepo-kernel kernel-lt-tools-libs-devel.x86_64 4.4.176-1.el7.elrepo elrepo-kernel kernel-ml.x86_64 5.0.0-1.el7.elrepo elrepo-kernel kernel-ml-devel.x86_64 5.0.0-1.el7.elrepo elrepo-kernel kernel-ml-doc.noarch 5.0.0-1.el7.elrepo elrepo-kernel kernel-ml-headers.x86_64 5.0.0-1.el7.elrepo elrepo-kernel kernel-ml-tools.x86_64 5.0.0-1.el7.elrepo elrepo-kernel kernel-ml-tools-libs.x86_64 5.0.0-1.el7.elrepo elrepo-kernel kernel-ml-tools-libs-devel.x86_64 5.0.0-1.el7.elrepo elrepo-kernel perf.x86_64 5.0.0-1.el7.elrepo elrepo-kernel python-perf.x86_64 5.0.0-1.el7.elrepo elrepo-kernel Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: centos.in * elrepo: mirror-hk.* elrepo-kernel: mirror-hk.* epel: * extras: centos.in * updates: centos.in Resolving Dependencies -- Finished Dependency Resolution Dependencies Resolved ==================================================================================== Package Arch Version Repository Size ==================================================================================== Installing: kernel-ml x86_64 5.0.0-1.el7.elrepo elrepo-kernel 47 M Transaction Summary ==================================================================================== Install 1 Package Total download size: 47 M Installed size: 215 M Is this ok [y/d/N]: y Downloading packages: kernel-ml-5.0.0-1.el7.elrepo.x86_64| 47 MB Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : kernel-ml-5.0.0-1.el7.elrepo.x86_64 1/1 Verifying : kernel-ml-5.0.0-1.el7.elrepo.x86_64 1/1 Installed: kernel-ml.x86_64 0:5.0.0-1.el7.elrepo Complete!
Some sites load favicons using old html methods and some sites load multiple favicons by examining aspects of the user (e.g., browser). The reason for the time delay from what I've read is to improve the performance of the browser.Ready to update your kernel on Cent OS 7 or one of their derivatives such as RHEL 7 and Fedora? When we install a distribution it includes a certain version of the Linux kernel.To show the current version installed on our system we can do: If we now go to https:// we will see that the latest kernel version is 5.0 at the time of this writing (other versions are available from the same site). They are not changed for 24hours; note, this 24 hour period is bumped every time you visit a page.You might try, after clearing your history and quitting FF, advancing your computers clock by 48 hours, then start FF and go to the site and see what happens. However, it should definitely delete after 24 hours of not going to the site based on the documentation.
Although some people use the word Linux to represent the operating system as a whole, it is important to note that, strictly speaking, Linux is only the kernel.