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Recent Posts Tagged With 'Unix'
Best of Linux Cheat Sheets
Below list of Linux cheat sheets can be used by everybody who administer Linux operating system including beginners/newbies and bearded gurus. PDF | Command Line Interface (CLI), Security, Networking Unix/Linux Command Reference by fosswire.com THE ...
FAQ: How to scrollback in GNU SCREEN?
Q: I was compiling kernel using GNU Screen utility but something happened during the compilation and I want to see full error’s output but I can't just scrollback using Ctrl+PageUp. How to scrollback in GNU Screen? A: In GNU Screen press Ctrl +...
Another 10 good Unix habits to pickup
Well, IBM publishes a new article about useful Unix command line habits as a follow-up to Michael Stutz’s article. I promise that after reading this article you will say something like "A-ha, I didn't know you could do that!" Here is the part ...
FAQ: How to order pizza from Linux CLI?
Q: How can I order my favourite pizza by using Linux command line interface? A: Well… You can use Pizza Party application written by Cory Arcangel and Michael Frumin! Here are some features this outstanding application provides: Can order piz...
#ln -s /dev/null /dev/clue
found at http://17outs.com/. Related PostsNo related posts...
FAQ: How to retreive hardware manufacturer name, serial numbers, etc. in Linux command line
Question: How can I get information about hardware manufacturer, model name, serial number, BIOS information using Linux command line (CLI)? Answer: You are welcome to use dmidecode which helps to get information about your system’s hardware ...
OpenBSD: Secure Mail Server with Postfix, MySQL, ClamAV, SpamAssassin, Amavis-new
Few days ago I started configuring corporate mail server that should be deployed on OpenBSD and comprise the following features: Easy to configure and powerful MTA (Postfix) Virtual domains and user accounts (this information is stored in MySQL data...
10 good Unix habits to pick up
as usual provides us with excellent article about good habits which would help Unix administrators to improve their command line usage efficiency and break away from bad usage patterns in the process. I was impressed by this article and realized my ...
Sun acquires MySQL AB
Exciting news was published today at Jonathan Schwartz' (Chief Executive Officer and President of Sun Microsystems) blog: We announced big news today - our preliminary results for our fiscal second quarter, and as importantly, that we're acquiring My...
Slackware + NetBSD = VoltaLinux
VoltaLinux is a GNU/Linux distribution based on Slackware and includes pkgsrc package system from NetBSD. Recently this project released 2.0 version of their distro where any system administrator can enjoy the clean design of Slackware and power of *...
Secure Linux/Unix system that runs OpenSSH
I came across invaluable article on how to make Linux system that runs OpenSSH server to be even more secure. It’s written by 17-year-old (!!!) Peter Upfold from FOSSwire and covers the following simple steps: Disable SSH protocol 1 Enable key...
Latest nmap 4.50 is out. Must upgrade!
Nmap is well known open source tool for security auditing and many other related network exploring activities. Here is it’s developers' description taken from their site: Nmap uses raw IP packets in novel ways to determine what hosts are availa...
Graphical vi/vim functional keys sheet
vi is a free software screen-oriented text editor written by Bill Joy in 1976 for an early BSD release.Vim, which stands for Vi IMproved, is an open source, multiplatform text editor extended from vi. It was first released by Bram Moolenaar in 1991....
Google is 9 years old now
PageRank 10 page google.com, turned 9 years old at 27th of September 2007, according to the special logo put up for the occasion yesterday. wikipedia.org: Google was co-founded by Larry Page and Sergey Brin while they were students at Stanford Univer...
Dump ipcad output into sqlite3
ipcad is IP accounting daemon with Cisco-like ip accounting export. It runs in background, listens traffic on the specified interfaces, and records the traffic for later retrieval and analysis. Here is a piece of shell code that allows to export ipca...
Apache web server benchmark tool ab
ab is a tool for benchmarking your Apache HTTP server. It is designed to give an impression of how Apache installation performs. This especially shows how many requests per second certain Apache installation is capable to serve. Manual of ab is r...
Testing system validity
IBM: Systems Administration Toolkit: Testing system validity The typical UNIX® administrator has a key range of utilities, tricks, and systems he or she uses regularly to aid in the process of administration. There are key utilities,...
What is a Linux guy doing at Sun?
As part of Sun Microsystems’ first CommunityOne, Ian Murdock, Sun’s chief operating system platform strategist and a self-described “Linux guy”, hosted a noteworthy session that explored a curious question: How can we make So...
Combined traceroute and ping utility (mtr)
MTR is a tool that combines the Unix/Linux traceroute and ping programs functionality in a single network diagnostic tool. As mtr starts, it investigates the network connection between the host mtr runs on and certain HOSTNAME by sending pac...
BSD Packet Filter (pf) resources
Here is list of some useful resources regarding OpenBSD Packet Filter:\nPF User’s Guide by by Wouter Coene\nNAT with pf by Jacek Artymiak\nSecuring Small Networks with OpenBSD by Jacek Artymiak\nFirewalling with PF by Peter N. M. Hansteen (norw...
Simple way to transmit files over network (nc utility)
There are many ways to transmit files between computers over the heterogeneous network (Linux, Windows, Apple MAC and other systems). I used to run SCP for my every day administrative tasks, especially when client SCP utility is available for Windows...
Manage FreeBSD kernel modules on the fly
There are several utilities in FreeBSD to manage kernel modules. Among them are: kldload, kldstat, kldunload. First (kldload) would be useful for loading files *.ko into FreeBSD kernel using kernel linker. Second (kldstat) displays status of files lo...
BMW migrates FROM Unix on race to Intel
Motor giant BMW will migrate about a third of its fleet of proprietary Unix servers to commodity Intel machines with Linux and Windows to take on the workloads. Eckard Schiffler from BMW’s [...]...
How to restart/stop/start networking in FreeBSD
FreeBSD® is an advanced operating system for x86 compatible (including Pentium® and Athlon™), amd64 compatible (including Opteron™, Athlon™64, and EM64T), UltraSPARC®, IA-64, PC-98 and ARM architectures. It is derived from BSD, the version o...
Linux/Unix coreutils command ‘paste’ to merge lines of files
Unix and Linux GNU coreutils command paste can be useful to merge corresponding or subsequent lines of files. Here is simple example of it’s usage: viper@viper-laptop:~$ cat /tmp/test pop pop1 pop2 viper@viper-laptop:~$ cat /tmp/test1 1 2 3 ...
Get FreeBSD ports tree after OS installation
Many new FreeBSD users face the problem when /usr/ports directory is missing just after OS installation is finished. Here are three ways from FreeBSD Handbook to obtain ports collection. ...
Two-way conversion of Unix time (seconds since 1970) and regular time
I found using of Unix time to be very useful in various shell scripts and here are two simple commands to convert Unix/Linux date command to Unix time format and back to regular formating: To convert Unix time to simple (regular) time please use: dat...
Linux and Unix fmt utility as a simple text formatter
fmt utility is a part of GNU core utilities and allows to reformat paragraph text writing to standard output. It also can read input from stdin. Usage example: Let’s assume you have big one-line text file (all words are placed in one single lin...
Keep files at Linux/Windows/Unix synchronized with Unison
Unison is a file-synchronization tool for Unix and Windows. It allows two replicas of a collection of files and directories to be stored on different hosts (or different [...]...
