Sometimes you may work on a remote machine and you don't have sudo permissions to install software you like. If … Read the rest
Author Archives: isabekov
Using regular expressions with Perl, sed and grep for selecting columns in delimited text
A solution without regular expressions
There are many ways for selecting columns in a delimited text. The easiest ones require … Read the rest
Sharing files over HTTP
Quick sharing of a single/multiple files in a directory over HTTP protocol will be covered. Let's assume that the file … Read the rest
Fixing the table of contents bookmarks in the book “Speech and Language Processing (3rd ed. draft)” by Dan Jurafsky and James H. Martin
A draft of the new version of the book "Speech and Language Processing (3rd ed. draft)" by Dan Jurafsky and … Read the rest
Modifying bookmark opening levels of PDF documents using Coherent PDF Command Line Tools (cpdf)
Sometimes large books or theses may contain many chapters, section and subsections. Reading such PDF documents with the whole table … Read the rest
GNU Wget Cheat sheet
Recursively download a part of a website (all files are downloaded, hierarchy is preserved and links are converted)
4-bit Serial Adder/Subtractor with Parallel Load
This is a tutorial I wrote for the "Digital Systems Design" course as an introduction to sequential design. "4-bit Serial … Read the rest
Using UrJTAG and OpenOCD to Write to a BSCAN Primitive on Xilinx Spatan 3 FPGAs
There are no tutorials explaining the use of BSCAN_SPARTAN3 primitive on Xilinx FPGAs. It's a very useful feature, which allows … Read the rest
Reading Device DNA on Spartan 3A chip
Among Spartan-3 generation of FPGAs only families 3A and 3AN have unique device identifier (device DNAs). DNA is a factory … Read the rest