Month: March 2010

iScanner: malware pwned

From linuxpoison.blogspot.com iScanner is free open source tool lets you detect and remove malicious codes and web pages viruses from your Linux/Unix server easily and automatically. This tool is programmed by iSecur1ty using Ruby programming language and it’s released under the terms of GNU Affero General Public License 3.0. iScanner Features: * Detect malicious codes…


Linux Server Profiling

From borasky-research.net Using Open Source Tools For Bottleneck Analysis This tutorial covers profiling of Linux servers using open-source tools such as “iostat”, “oprofile” and “blktrace”. Both processor-bound and I/O-bound cases are covered, and the emphasis is on tools that provide visual displays of relevant metrics. Linux Server Profiling: Using Open Source Tools For Bottleneck Analysis


AMD’s 12-core chip may cut software costs

From computerworld.com Advanced Micro Devices today released its 12-core chip, doubling the number of cores in the previous-generation chip in its Opteron line. One of the key benefits in taking advantage of the performance gains delivered by a chip with a dozen cores may be in reducing software licensing costs. The performance its new Opteron,…


OpenSSL 1.0.0 released

The OpenSSL Project is a collaborative effort to develop a robust, commercial-grade, full-featured, and Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library. The project is managed by a worldwide community of volunteers that use the Internet to…


0M “disk used” in whm

Ran into this error again last night, scrambled for the notes but couldn’t find them… Pulled this from cpanel support (those guys ROCK!) SSH into the server and run; quotaoff -a quotacheck -acfmv /scripts/resetquotas Main >> Account Information >> List Accounts should now have the “Disk Used” section reporting correctly again also if cat /etc/fstab…


ssh keys for multiple server access

From cyberciti.biz How to use multiple SSH keys for password less login by Vivek Gite I’ve already written about howto log in, on your local system, and make passwordless ssh connections using ssh-keygen command. However, you cannot just follow these instructions over and over again, as you will overwrite the previous keys. It is also…


Copy from shell to clipboard

From go2linux.org Linux never stops surprising me, I discover a new application, or a new tip every day, I have been with no time this last months so I could not write here as much as I would like. Anyway, let me share this tip with you. Today tool is xclips, first of all install…


Atop

From atoptool.nl (atop has been updated to 1.26. Get it HERE Atop is an ASCII full-screen performance monitor that is capable of reporting the activity of all processes (even if processes have finished during the interval), daily logging of system and process activity for long-term analysis, highlighting overloaded system resources by using colors, etc. At…


One Line Linux Command to Print Out Directory Tree Listing

From systembash.com My professor sent us this little one liner which prints out the current directory tree: ls -R | grep “:$” | sed -e ‘s/:$//’ -e ‘s/[^-][^\/]*\//–/g’ \-e ‘s/^/ /’ -e ‘s/-/|/’ What’s going on here? * ls -R — list files and directories recursively * grep “:$” — find lines with : at…


Accessing an IMAP email account using telnet

About IMAP. IMAP is an email protocol for organizing, storing and retrieving emails on a remote server. It was developed after POP and is a much more advanced system, one of the main differences being that all the mail is stored on the server so it remains accessible from many different locations. With POP you…