বুধবার, ২৩ আগস্ট, ২০১৭

LInux utility

1. For closing a freezed program

Press ALT+F2 then run xkill command . Then a cross will appear at mouse cursor . Place this cursor to freezed program tab .

2. For deleting files of a specific type

find . -name "*.o" -type f -delete

শনিবার, ১২ আগস্ট, ২০১৭

Getting started with latex in ubuntu simple

  1. apt-get install texlive (for ubuntu)
  2.  
    \documentclass[a4paper,12pt]{article}
    \begin{document}
    
    The foundations of the rigorous study of \emph{analysis}
    were laid in the nineteenth century, notably by the
    mathematicians Cauchy and Weierstrass. Central to the
    study of this subject are the formal definitions of
    \emph{limits} and \emph{continuity}.
    
    Let $D$ be a subset of $\bf R$ and let
    $f \colon D \to \mathbf{R}$ be a real-valued function on
    $D$. The function $f$ is said to be \emph{continuous} on
    $D$ if, for all $\epsilon > 0$ and for all $x \in D$,
    there exists some $\delta > 0$ (which may depend on $x$)
    such that if $y \in D$ satisfies
    \[ |y - x| < \delta \]
    then
    \[ |f(y) - f(x)| < \epsilon. \]
    
    One may readily verify that if $f$ and $g$ are continuous
    functions on $D$ then the functions $f+g$, $f-g$ and
    $f.g$ are continuous. If in addition $g$ is everywhere
    non-zero then $f/g$ is continuous.
    
    \end{document}
    
    
    Save this content to test.tex named file . 
     
    3.latex test.tex (for compiling)
    4.xdvi test.dvi & (for seeing output)
    5.pdflatex test.tex  (for generating output)
    6.htlatex text.tex (for getting output in html file)
    To install htlatex in ubuntu type (sudo apt install tex4ht 
     
    source
     
    http://www.maths.tcd.ie/~dwilkins/LaTeXPrimer/ 
     
     

How it feels like reading a book in a kindle reader?

Recently I have a amazon kindle reader as gift from my little brother. Though I am in temptation to have one for 3 years. One of my friend ...