Category Archives: Linux

Linux – commands to clear RAM cache and Swap space.

The Linux System has three options to clear cache without interrupting any processes or services. To clear all PageCache, dentries and inodes you need to use something like:

The drop_caches file can be changed by echo command with this numbers: 1,2 and 3. To clear the Swap space, you may like to run the… Read More »

Chrome : The Site Isolation feature.

Site Isolation has been enabled by default in Chrome 67 on Windows, Mac, Linux, and Chrome OS to help to mitigate attacks that are able to read otherwise inaccessible data within a process, such as speculative side-channel attack techniques like Spectre/Meltdown. Site Isolation reduces the amount of valuable cross-site information in a web page’s process,… Read More »

Linux – ss command .

The TSocket Statistics (ss) command is similar to netstat, and it is used to display useful network socket information. The ss command syntax come with specify optional flags and filters:

Let’s see some examples with this linux command: 1. List Established Connections The default run with the ss command display a list of open… Read More »