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Debian / Ubuntu Linux Delete Old Kernel Images Command
http://www.cyberciti.biz/faq/debian-ubuntu-linux-delete-old-kernel-images-commandI'm a new Ubuntu Linux user and noticed that old kernel still exists in my system. Why doesn't Ubuntu remove old kernels...
View ArticleRegular Expressions In grep
http://www.cyberciti.biz/faq/grep-regular-expressionsHow do I use the Grep command with regular expressions on a Linux and Unix-like operating systems?Linux comes with GNU grep, which supports extended...
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HowTo: Linux Check Password Strength With Cracklib-check Command
http://www.cyberciti.biz/security/linux-password-strength-checkerUsing the same password on different servers allows attackers to access your accounts if cracker manage to steal your password from a...
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How to remove trailing whitespaces in a file on Linux
http://ask.xmodulo.com/remove-trailing-whitespaces-linux.htmlQuestion: I have a text file in which I need to remove all trailing whitespsaces (e.g., spaces and tabs) in each line for formatting...
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Generate CPU, Memory & I/O report using SAR command
http://www.linuxtechi.com/generate-cpu-memory-io-report-sar-commandSAR stands for System Activity Report, as its name suggest sar command is used to collect,report & save CPU, Memory, I/O usage in...
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How to start Android app development for complete beginners in 5 steps
http://www.androidauthority.com/android-app-development-complete-beginners-658469So you have a killer app idea and you’re ready to turn it into a reality and take it to market. No doubt you’re itching...
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Linux and Unix Port Scanning With netcat [nc] Command
http://www.cyberciti.biz/faq/linux-port-scanningHow do I find out which ports are opened on my own server? How do I run port scanning using the nc command instead of the nmap command on a Linux or...
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A hitchhikers guide to troubleshooting linux memory usage
http://techarena51.com/index.php/linux-memory-usageLinux memory management has always intrigued me. While learning Linux, many concepts are confusing at first, but after a lot of reading, googling,...
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Practical tips for working with OpenStack
http://opensource.com/business/15/11/practical-tips-working-openstackTo build your own cloud and take advantage of the power of the open source powered OpenStack project takes dedicated resources and a...
View ArticleCipher Security: How to harden TLS and SSH
http://www.linuxjournal.com/content/cipher-security-how-harden-tls-and-ssh Encryption and secure communications are critical to our life on the Internet. Without the ability to authenticate and...
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Cleaning Linux: Jed’s Nappy /boot
http://freedompenguin.com/articles/how-to/cleaning-linux-jeds-nappy-bootMy home NAS machine is an Ubuntu 14.04 machine with a ZFS volume. I need the linux-headers packages in order to compile my ZFS...
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Finding the right tool for the job
https://opensource.com/life/15/12/my-open-source-story-pete-savageWhen I was 13, our school was hooked up to the Internet—a 28.8 kbps U.S. Robotics modem was all that stood between us and the vast...
View ArticlePython Execute Unix / Linux Command Examples
http://www.cyberciti.biz/faq/python-execute-unix-linux-command-examplesHow do I execute standard Unix or Linux shell commands using Python? Is there a command to invoke Unix commands using Python...
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HowTo: Verify My NTP Working Or Not
http://www.cyberciti.biz/faq/linux-unix-bsd-is-ntp-client-workingI've setup an NTP (Network Time Protocol) client and/or server to manage the system clock over a network. But, how do I verify that it...
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Bash For Loop Examples
http://www.cyberciti.biz/faq/bash-for-loopHow do I use bash for loop to repeat certain task under Linux / UNIX operating system? How do I set infinite loops using for statement? How do I use...
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How Do I Find The Largest Top 10 Files and Directories On a Linux / UNIX / BSD?
http://www.cyberciti.biz/faq/how-do-i-find-the-largest-filesdirectories-on-a-linuxunixbsd-filesystemHow do I find the largest top files and directories on a Linux or Unix like operating systems?...
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How to enable Software Collections (SCL) on CentOS
http://xmodulo.com/enable-software-collections-centos.htmlRed Hat Enterprise Linux (RHEL) and its community fork, CentOS, offer 10-year life cycle, meaning that each version of RHEL/CentOS is updated...
View ArticleHow to use snapshots, clones and replication in ZFS on Linux
https://www.howtoforge.com/tutorial/how-to-use-snapshots-clones-and-replication-in-zfs-on-linuxIn the previous tutorial, we learned how to create a zpool and a ZFS filesystem or dataset. In this...
View ArticleGetting started with Docker by Dockerizing this Blog
http://bencane.com/2015/12/01/getting-started-with-docker-by-dockerizing-this-blogThis article covers the basic concepts of Docker and how to Dockerize an application by creating a custom Dockerfile...
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World’s Fastest Password Cracking Tool Hashcat Is Now Open Source
http://fossbytes.com/worlds-fastest-password-cracking-tool-is-now-open-sourceShort Bytes: The world’s fastest cracking tool Hashcat is now open source. The company has called it a very important step...
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