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Showing posts from December, 2006

C/C++ Basic - protect data and pointer with const

char * const lpszct = "test"; //protecting pointer
char szBuff[10];
strcpy(szBuff, "123");
const char* lpctsz=szBuff; //protecting data pointed.

lpszct = "12"; //<-- compile error trying to change the pointer address

lpszct ++; //<-- compile error trying to change the pointer address

lpctsz[0] = '7'; //<-- compile error where trying to change the data

Google Search Cheat Sheet

define:[word] Search word in dictionaries
filetype:[ext] Query result with filetyp. E.g. "C++ filetype:pdf"
/[country] Limited search to coutry E.g. "food /malaysia
/language:[language shorthand] Limited to particular language group. e.g. "cari /language:ms"
site:[domain] Limited to a domain. e.g. "thread site:edu"
inanchor:[url] Limited search to anchor <a>
inurl:[word] Limited search to URL of sites
intitle:[word] Limited search to web site title
(content inside html title tag i think)
intext:[word] Limited search to web site content

Kill all my processes in current Unix machine (shell script)

This is a korn shell script, but should work in other shell with little change or none.

#created by Anthony Yio, 28 Dec 06
#!/bin/ksh
MYUSER=`whoami`
for MYPID in `ps -ef | grep $MYUSER | awk '{ print $(2) }' | sort -r`
do
`kill -9 $MYPID`
done

A little perl script to spice up your unix shell startup

Content of perl script
-----------
use strict;

$/ = "\n%%%\n"; #define separator for array
open ARTS, "art.dat" or die $!;
my @file = <arts>;
my $random = rand(@file);

my $ascii_art = $file[$random];
$ascii_art=~s/\n%%%\n//; #remove the separator string
print $ascii_art, "\n";
----------

sample content of art.dat, you can get more from the mentioned web site or newsgroup
(sample below taken from http://www.chris.com/ASCII/)
----------

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$$$$$$$$$$$*" *$$$$$$$$$$$$$$$$$$$$$$$$$$$" "*" *$$$$$$" ^$$$"$$$$$$$$$$$
$$$$$$$$$" z$P"$$$$$$$$$$$$$$$$$$$$$$$$P e$"e4$b. "$$" d$ $P $$$$$$$$$$$$
$$$$$$$" .$$$ J$$$$$$$$$$$$$$$$$$$$$$$" .$Pz$$4$$$$c z" $$*" z$$$$$$$$$$$$$
$$$$$$ 4$$$$$$$$$$$$$$$$$$$$$$$$$$$P z$$4$$%$$$$$$$d " z$$$$$$$$$$$$$$$
$…