From the category archives:
Squid is a proxy caching server. If you are Linux sysadmin, you can use squid to control internet access at your work environment.
This beginners guide will give a jump-start on how to setup squid on Linux to restrict internet access in an network.
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All IT projects needs a bug tracking (or issue tracking, or defect tracking) system.
Sure, we need a bug tracking system for a software development project. But, what about a sysadmin team, dba team, network team? They all need some help to track their work, and issues of their system, database and network.
I’ve listed 10 open source bug tracking systems, that you can experiment, and choose based on your taste and requirement. This is not a comprehensive list by any means. I’ve used all the systems listed in the top 5, and I strongly recommend that you choose one from the top 5 list.
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cpio command is used to process archive files (for example, *.cpio or *.tar files).
cpio stands for “copy in, copy out”.
cpio performs the following three operations.
cpio takes the list of files from the standard input while creating an archive, and sends the output to the standard output.
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tcpdump command is also called as packet analyzer.
tcpdump command will work on most flavors of unix operating system. tcpdump allows us to save the packets that are captured, so that we can use it for future analysis. The saved file can be viewed by the same tcpdump command. We can also use open source software like wireshark to read the tcpdump pcap files.
In this tcpdump tutorial, let us discuss some practical examples on how to use the tcpdump command.
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When you install any software from source, you typically execute commands like — “make”, “make install”, “make clean”, etc. Have you wondered what all these make commands are really making? Sure, we know that it is trying to compile and install the software. But, why make? What does it really do?
For compiling a single C program, cc command is very helpful. For compiling multiple C programs, Make utility is very helpful.
Also, C programmers and sysadmins will find it helpful to automate the compilation related tasks using make utility. In this article, let us review how to use make command.
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Question: I would like to add more swap space to my Linux system. Can you explain with clear examples on how to increase the swap space?
Answer: You can either use a dedicated hard drive partition to add new swap space, or create a swap file on an existing filesystem and use it as swap space.
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IPC stands for Inter-process Communication.
This technique allows the processes to communicate with each another.
Since each process has its own address space and unique user space, how does the process communicate each other?
The answer is Kernel, the heart of the Linux operating system that has access to the whole memory. So we can request the kernel to allocate the space which can be used to communicate between processes.
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My name is Ramesh Natarajan. I will be posting instruction guides, how-to, troubleshooting tips and tricks on Linux, database, hardware, security and web. My focus is to write articles that will either teach you or help you resolve a problem. Read more about Ramesh Natarajan and the blog.Copyright © 2008–2010 Ramesh Natarajan. All rights reserved |
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