Viewing: Linux

Issue #1

{PHP} PHP 7.0.13 released {Debian} Debian 9 drops support for powerpc {Security} A fake SSH server that lets everyone in and logs their activity {Docker} Docker in production: A history of failure {Editor} Buttery smooth Emacs {Kernel} The status of Linux kernel hardening {Hardware} Warning: 2016 MacBook Pro is not compatible with Linux. You should […] Read More

Windows and Linux according to mighty Google

Here is a humorous take on age old Windows vs. Linux fanboy battel: VS […] Read More

Find the oldest file in Unix or Linux file system

So I wanted to know the oldest file on my Debian Linux box. find / -type f -printf '%T+ %p\n' | sort | head -n 1 Here is an another example for /etc/ find /etc/ -type f -printf '%T+ %p\n' | sort | head -n 10 So find command finds all files in / and […] Read More

virsh destroy && virsh undefine = Delete a guest VM on Linux KVM after creating it with virt-install

If you created a KVM guest from the command line with first install. Say, after sometimes you do not need a guest VM. However, how do you I delete this KVM guest from the command line? The answer is simple: virsh destroy VM_NAME && virsh undefine VM_NAME Of course as usual stuff in IT may […] Read More

Get 2x faster performance & 50% better memory consumption than PHP 5.6 by using PHP 7 on Debian and Ubuntu Linux

So PHP 7 provides 2x faster performance and 50% better memory consumption than PHP version 5.6. How do you install PHP 7 on Ubuntu Linux version 14.04 LTS server? How do I install PHP 7 with PHP-FPM in along with Nginx web server or Lighttpd or Apache 2 server? How can I install PHP 7 […] Read More

Schrodinger Backups: The condition of any backup is unknown until a restore is attempted

A tweet about backups got pretty popular among sysadmin and IT community. The tweet read as follows: #Sysadmin #Truth #Backup #Unix #Linux pic.twitter.com/suCT9ME58V— nixCraft # (@nixcraft) June 24, 2015 […] Read More

Dirty COW (CVE-2016-5195) is a local privilege escalation vulnerability. Do not ignore this bug.

A race condition was found in the way the Linux kernel’s memory subsystem handled the copy-on-write (COW) breakage of private read-only memory mappings. A local unprivileged user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system. In other words, the normal user can […] Read More

How To Set Up SSH Keys

SSH keys provide a better and secure way of logging into a server with SSH than using a password. If you are a sysadmin or programmer, you may need to use SSH to fix server or update code. This guide explains how to setup SSH keys securely between your server and client computer. Read more […] Read More