Category Archives: Free Software

I will talk you about Free Softwares

Know CPU architecture

  lscpu is a small program to gather information about CPU architecture like number of cores, threads, byte order, sockets, BogoMIPS, stepping, caches, etc. It prints these information in human readable format as well as in parseable format which can be given to other programs. lscpu is part of linux-util package. $ lscpu Architecture:          i686 […]

Kernel Module Signing

Today I will talk about one of the most interesting security feature of Linux kernel modules. Linux kernel allows to load and unload modules dynamically. These modules can be in-tree or out-of-tree built. But when it comes to security, you may think that this facility can lead to insertion of malicious modules in kernel. But […]

Linux Tee

  You have taken some tea at some point but today I am offering you a Linux tee today. tee(1) is small utility which copies standard input to stranded out but also to multiple files. Let us take an example to know how it works. rahul@rahul-Aspire-4736Z:~$ ls | tee test | wc -l 23 rahul@rahul-Aspire-4736Z:~$ […]