shell
The PATH variable contains a list of the default directories that are searched for any command you type in that is without a path. To change it in tcsh or any csh based shell edit your .cshrc file in your home directory and add the directory where you see set path # ee ~/.cshrc Your [...]
Linux default path, shell, shells, tcsh,
Mail is a command to send and receive mail in Unix, Linux and BSD operating system. To initiate a mail sending process, just type in the following command: mail recipient@domain.com Obviously, replace recipient@domain.com with a valid email address. The system will prompt for a subject of the email before allowing user to type in the [...]
Linux coomand line, linux, mail, send, shell,
Wildcards are a shell feature that makes the command line much more powerful than any GUI file managers. You see, if you want to select a big group of files in a graphical file manager, you usually have to select them with your mouse. This may seem simple, but in some cases it can be very [...]
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Working at the Linux command line requires a lot of typing. It would get very frustrating with long commands and file names, but luckily your Tab key can make your life a lot easier. You have to type only the beginning of a command, directory, or a file name, hit the Tab key and the [...]
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 Usermin is a web interface similar to Webmin, but designed for normal Unix users to carry out tasks that they should normally do at the shell prompt. It was written by the same author as Webmin, shares a lot of the same code, and has a similar underlying design and user interface. Whereas Webmin allows [...]
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Invoke the linuxconf tool. ( type linuxconf in the shell prompt and press Enter ). For starting this tool you have to be logged in as Super user. In the displayed menu, select the menu item : IP Aliases for virtual hosts and press Enter. This will display the two interfaces eth0 and lo. (Ethernet [...]
Linux alias, box, configured, es, interface, ip address, ips, linux, linuxconf, long time, privilege, run time, shell, tool type, virtual hosts,
If you are unfamiliar with SSH this is ok. This is a simple explanation to get you to a command prompt on your new server or existing server. Simply download a program called “putty.exe” if you are using Windows. If you are using MAC you will need to jump in to the shell and follow [...]
Linux accesses, command, difference, execution, help, hosts, logins, mac, names, openness, passwords, port, ports, roots, server, servers, sessions, settings, shell, ssh, start, what, Windows,
This allows full access through our firewall to certain trusted sources (host PCs). Now we’ll look at how we can filter against protocols and ports to further refine what incoming packets we allow and what we block. Before we can begin, we need to know what protocol and port number a given service uses. For [...]
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We will use an example based approach to examine the various iptables commands. In this first example, we will create a very simple set of rules to set up a Stateful Packet Inspection (SPI) firewall that will allow all outgoing connections but block all unwanted incoming connections:
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Replication enables data from one MySQL database server (called the master) to be replicated to one or more MySQL database servers (slaves). Replication is asynchronous – your replication slaves do not need to be connected permanently to receive updates from the master, which means that updates can occur over long-distance connections and even temporary solutions [...]
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Webalizer is a fast, free web server log file analysis program. It produces highly detailed, easily configurable usage reports in HTML format, for viewing with a standard web browser. It was written to solve several problems with currently available analysis packages. A vast majority of them were written in Perl or some other scripting language, [...]
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Many users, despite having a good Net connection, complain about poor surfing and download speeds. While an organization could pay for additional bandwidth, a better option might be to manage the bandwidth they already have. There are numerous bandwidth management software tools available. In this article we will explore managing network bandwidth using the dummynet [...]
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Grep is by far the most popular command that exists in Unix. Though some may argue about that, but once you begin using grep, it would always be present in all your complex commands that you think of executing at the shell prompt. grep stands for ‘global regular expression printer‘ . Which makes no sense [...]
Linux Backup, check, command, directory, execution, file, grep, group, help, ignore, linux, listing, names, pipes, recursion, recursively, scripts, settings, shell, system, systems, tools, understanding, unix, user, what,
This is an introductory guide for people learning to use a Linux system. It focuses on command-line usage. This is not because everyone will be doing everything at the command line. On the contrary, there are many useful GUI tools and programs in Linux, and some people will be content to stay with these. However, in contrast to GUI programs, which can be learned largely by “click and try”, the command-line requires some deliberate learning, and reading documentation. The benefit of this investment is that you will learn the tools and tricks of the command line which are in many cases faster, more powerful, and more flexible than any GUI program.
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