OpenWritings.net

#!/bin/bash
# Description: Decompress all *.rar files and delete them if ran successfully.
#              Errors are logged in err.log.
# Author: Xuan Ngo
# Usage: sh thisScript.sh
# Warning: It doesn't handle multiple part rar files.
 
# Change $IFS so that it handles filename with spaces.
SAVEIFS=$IFS
IFS=$(echo -en "\n\b")
 
 
ERROR_LOG=err.log
 
for filename in $(ls *.rar)
do
 
  # Extract and send error text in ${ERROR_LOG}
  rar x -y "${filename}" 2> ${ERROR_LOG}
  ERROR_LOG_SIZE=`ls -sh ${ERROR_LOG} | gawk '{print $1}'`
 
  # If there is no error.

#!/bin/bash
# Description: Automatically take 8 screenshots of a video using mplayer
#              Screenshots are saved in 01.png, 02.png, ..., 08.png
# Author: Xuan Ngo
# Usage: ./thisScript.sh nameOfVideo
 
filename="$1"
 
# For some unknown reason, the last screenshot is not generated by mplayer.
# Therefore, always add 1 more to the total of screenshots that you want.
NUM_OF_SCREENSHOTS=9
 
# Get the total video length in seconds.
#  Use mplayer to display the info of the video and then get the value of ID_LENGTH, the total number of seconds of the video.

octave-3.2.4.exe:1> function y = a(x)
> y=3*x;
> endfunction
octave-3.2.4.exe:2> function y = b(x)
> y=5*x;
> endfunction
octave-3.2.4.exe:3> a(3)
ans =  9
octave-3.2.4.exe:4> b(3)
ans =  15
octave-3.2.4.exe:5> x=1:1:15;
octave-3.2.4.exe:6> plot( x, a(x), b(x) )
octave-3.2.4.exe:7>
octave-3.2.4.exe:7> title("Multiple functions on 1 graph")
octave-3.2.4.exe:8> xlabel("x")
octave-3.2.4.exe:9> ylabel("y")
octave-3.2.4.exe:10> grid

octave-3.2.4.exe:5> x=2;
octave-3.2.4.exe:6> y=3;
octave-3.2.4.exe:7> x*y
ans =  6

octave-3.2.4.exe:15> v=[1 2 3]
v =
 
   1   2   3
 
octave-3.2.4.exe:16> v*2
ans =
 
   2   4   6

octave-3.2.4.exe:13> m=[1 2 3; 3 4 5; 6 7 8]
m =
 
   1   2   3
   3   4   5
   6   7   8
 
octave-3.2.4.exe:14> m*3
ans =
 
    3    6    9
    9   12   15
   18   21   24

package org.javadoc.tutorial;
 
import java.lang.String;
 
/**
 * Example of what can be done with javadoc.
 * 
 * This is a longer description that can span into
 * multiple lines.
 * 
 * <ul>
 *  <li>{@literal {@value package.class#variable}} shows the value of a public variable 
 *        but it can't show a private variable.
 *  <li>{@literal {@link package.class#variableOrMethod}} links to the variable or method 
 *        but it can't link a private variable or method.
 * </ul>
 * 
 * @author Xuan Ngo
 * @version 1.0
 */
public class Person
{