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Search results for Execute Commands on Multiple Linux or UNIX Servers part II

Unix+clones

Execute Commands on Multiple Linux or UNIX Servers part II

Post date: December 28, 2005, 10:12 Category: System Views: 3298 Comments
Tutorial quote: I have already covered how to execute commands on multiple Linux or UNIX servers via shell script. The disadvantage of script is commands do not run in parallel on all servers. However, several tools exist to automate this procedure in parallel. With the help of tool called tentakel, you run distributed command execution. It is a program for executing the same command on many hosts in parallel using ssh (it supports other methods too). Main advantage is you can create several sets of servers according requirements. For example webserver group, mail server group, home servers group etc. The command is executed in parallel on all servers in this group (time saving). By default, every result is printed to stdout (screen). The output format can be defined for each group.
Unix+clones

Sudo FAQ

Post date: February 26, 2007, 21:02 Category: Security Views: 4196 Comments
Tutorial quote: Sudo is a simple program which allows the administrator to give regular users extra permissions to execute the commands they would normally not be allowed to use. Thanks to sudo, we can execute commands that are usually restricted to the root account. In practice, it looks like that: instead of typing su ->password -> command you type sudo command. In order to use sudo you need to configure it properly. This FAQ is supposed to help you with this task.
Linux

Basic Linux Commands With Man Pages

Post date: October 11, 2006, 16:10 Category: Installing Views: 2940 Comments
Tutorial quote: Here are some basic commands to get you started in the wonderful world of Linux and other UNIX variants. All of these commands should work from your command prompt (regardless which shell you’re using).
Linux

Use Webmin for Linux Administration

Post date: April 13, 2005, 00:04 Category: Software Views: 3300 Comments
Tutorial quote: Administering Linux and Unix-based servers does not need to be the scourge of your work day. With a handy tool called Webmin as part of your arsenal, you can regain complete control of your servers via the Web browser.
OSX

Unix FAQ (OS X)

Post date: October 22, 2006, 02:10 Category: System Views: 6201 Comments
Tutorial quote: Answers to frequently asked questions about using Unix-level commands on OS X. Serves as a relatively gentle introduction to the command-line interface for novices.
Unix+clones

How To Look Like A UNIX Guru

Post date: October 30, 2006, 02:10 Category: Miscellaneous Views: 5646 Comments
Tutorial quote: UNIX is an extremely popular platform for deploying server software partly because of its security and stability, but also because it has a rich set of command line and scripting tools. Programmers use these tools for manipulating the file system, processing log files, and generally automating as much as possible.

If you want to be a serious server developer, you will need to have a certain facility with a number of UNIX tools; about 15. You will start to see similarities among them, particularly regular expressions, and soon you will feel very comfortable. Combining the simple commands, you can build very powerful tools very quickly--much faster than you could build the equivalent functionality in C or Java, for example.

This lecture takes you through the basic commands and then shows you how to combine them in simple patterns or idioms to provide sophisticated functionality like histogramming. This lecture assumes you know what a shell is and that you have some basic familiarity with UNIX.
Debian

SSH your Debian servers without password

Post date: December 29, 2006, 20:12 Category: System Views: 3022 Comments
Tutorial quote: Secure Shell is a program to log into another computer over a network, to execute commands in a remote machine, and to move files from one machine to another. It provides strong authentication and secure communications over unsecure channels. It is intended as a replacement for telnet, rlogin, rsh, and rcp. For SSH2, there is a replacement for FTP: sftp.This might be useful if you are trying to connect everytime to your server remotely.
Linux

Linux Commands Line

Post date: January 5, 2008, 22:01 Category: Miscellaneous Views: 4043 Comments
Tutorial quote: Complete and updated list of commands on Linux - over 350 commands divided into arguments!
Linux

Linux Shortcuts and Commands

Post date: December 12, 2005, 18:12 Category: System Views: 2515 Comments
Tutorial quote: This is a practical selection of the commands and shortcuts we use most often. Handy linux commands source. Good stuff, many of these a lot of people already know but it is a great memory tool.
Linux

Breaking the SHELL

Post date: May 29, 2005, 01:05 Category: Programming Views: 3197 Comments
Tutorial quote: Shell scripts are a part and parcel of almost all software applications running on UNIX, and the use simply spans from a trivial script, managing automatic database backup to bunch of scripts collaboratively doing complex operation on regular expressions.

Though it's a mere design decision to partition modules between scripts and programming language, but I personally feel that they sometimes come very handy saving lot of time and lines of code, when compared to implementing the same functionality in the programming language in context.And in fact with some exceptions, complexity of a shell script can scale to that of codes in C language. Add to this the power of all those numerous UNIX commands, and just think through, what can be achieved by shell scripts.
Here I will discuss few topics mainly relevant to intermediate shell programmers
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