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Wednesday, March 31, 2010

"Owner company already exists" OpenGoo

An amazing error "Owner company already exists" was popped out while working on Opengoo migration.

It was caused when the admin user installing Opengoo was deleted

This was in the version 1.5.3

Wednesday, March 24, 2010

current timestamp in linux

date command gives the current time

and date command accepts the date formatting.

so the timestamp is given by

date +%s


NOTE: click here if you get an empty page.

DATE(1)     User Commands          DATE(1)


date - print or set the system date and time


date [OPTION]... [+FORMAT]
date [-u|--utc|--universal] [MMDDhhmm[[CC]YY][.ss]]


Display the current time in the given FORMAT, or set the system date.

-d, --date=STRING
display time described by STRING, not `now'

-f, --file=DATEFILE
like --date once for each line of DATEFILE

-r, --reference=FILE
display the last modification time of FILE

-R, --rfc-2822
output date and time in RFC 2822 format

output date and time in RFC 3339 format. TIMESPEC=`date', `sec-
onds', or `ns' for date and time to the indicated precision.

-s, --set=STRING
set time described by STRING

-u, --utc, --universal
print or set Coordinated Universal Time

--help display this help and exit

output version information and exit

FORMAT controls the output. The only valid option for the second form
specifies Coordinated Universal Time. Interpreted sequences are:

%% a literal %

%a locale's abbreviated weekday name (e.g., Sun)

%A locale's full weekday name (e.g., Sunday)

%b locale's abbreviated month name (e.g., Jan)

%B locale's full month name (e.g., January)

%c locale's date and time (e.g., Thu Mar 3 23:05:25 2005)

%C century; like %Y, except omit last two digits (e.g., 21)

%d day of month (e.g, 01)

%D date; same as %m/%d/%y

%e day of month, space padded; same as %_d

%F full date; same as %Y-%m-%d

%g the last two digits of the year corresponding to the %V week

%G the year corresponding to the %V week number

%h same as %b

%H hour (00..23)

%I hour (01..12)

%j day of year (001..366)

%k hour ( 0..23)

%l hour ( 1..12)

%m month (01..12)

%M minute (00..59)

%n a newline

%N nanoseconds (000000000..999999999)

%p locale's equivalent of either AM or PM; blank if not known

%P like %p, but lower case

%r locale's 12-hour clock time (e.g., 11:11:04 PM)

%R 24-hour hour and minute; same as %H:%M

%s seconds since 1970-01-01 00:00:00 UTC

%S second (00..60)

%t a tab

%T time; same as %H:%M:%S

%u day of week (1..7); 1 is Monday

%U week number of year with Sunday as first day of week (00..53)

%V week number of year with Monday as first day of week (01..53)

%w day of week (0..6); 0 is Sunday

%W week number of year with Monday as first day of week (00..53)

%x locale's date representation (e.g., 12/31/99)

%X locale's time representation (e.g., 23:13:48)

%y last two digits of year (00..99)

%Y year

%z +hhmm numeric timezone (e.g., -0400)

%:z +hh:mm numeric timezone (e.g., -04:00)

%::z +hh:mm:ss numeric time zone (e.g., -04:00:00) %:::z numeric
time zone with : to necessary precision (e.g., -04, +05:30) %Z
alphabetic time zone abbreviation (e.g., EDT)

By default, date pads numeric fields with zeroes. The following
optional flags may follow `%':

- (hyphen) do not pad the field _ (underscore) pad with spaces 0
(zero) pad with zeros ^ use upper case if possible # use oppo-
site case if possible

After any flags comes an optional field width, as a decimal number;
then an optional modifier, which is either E to use the locale's alter-
nate representations if available, or O to use the locale's alternate
numeric symbols if available.


Written by David MacKenzie.


Report bugs to .


Copyright (C) 2005 Free Software Foundation, Inc.
This is free software. You may redistribute copies of it under the
terms of the GNU General Public License
. There is NO WARRANTY, to the
extent permitted by law.


The full documentation for date is maintained as a Texinfo manual. If
the info and date programs are properly installed at your site, the

info date

should give you access to the complete manual.

date 5.93 October 2008 DATE(1)

� 1994 Man-cgi 1.15, Panagiotis Christias

Thursday, March 18, 2010

PHP array_splice vs. array_slice

array array_slice ( array $array , int $offset [,int $length [, bool $preserve_keys = false ]] )

Extract a slice of the array

Example :

$input= array("a", "b", "c", "d", "e");

$output = array_slice($input, 2); // returns "c", "d", and "e"
$output = array_slice($input, -2, 1); // returns "d"
$output = array_slice($input, 0, 3); // returns "a", "b", and "c"

// note the differences in the array keys
print_r(array_slice($input, 2, -1));
print_r(array_slice($input, 2, -1, true));

array array_splice ( array &$input , int $offset [, int $length = 0 [, mixed $replacement ]] )
Remove a portion of the array and replace it with something else

Example :

= array("red", "green", "blue", "yellow");
array_splice($input, 2);
// $input is now array("red", "green")

$input = array("red", "green", "blue", "yellow");
array_splice($input, 1, -1);
// $input is now array("red", "yellow")

$input = array("red", "green", "blue", "yellow");
array_splice($input, 1, count($input), "orange");
// $input is now array("red", "orange")

$input = array("red", "green", "blue", "yellow");
array_splice($input, -1, 1, array("black", "maroon"));
// $input is now array("red", "green",
// "blue", "black", "maroon")

$input = array("red", "green", "blue", "yellow");
array_splice($input, 3, 0, "purple");
// $input is now array("red", "green",
// "blue", "purple", "yellow");

Thanks -

PHP array_splice vs. array_slice

array_slice ( array $arra
, int $offset [, int $length [, bool $preserve_keys = false ]] )

array array_splice ( array &$input , int $offset [, int $length = 0 [, mixed $replacement ]] )

Flash Flipping Book HTML Version

The popular Flash Flip Book ( has a good html version to use.

its Joomla component version is used by and

Demo goes here

Pseudo Selectors CSS and JQuery

Pseudo Selectors Primarily for CSS and some for jquery too.

Wednesday, March 10, 2010

Tuesday, March 2, 2010

Programming Contest Questions

My Bookmarks for Programming Contest Questions

HP Code Wars Sample Problems

IPSC Questions Archives

List of all Programming Contests as defined in Open Directory

The International Obfuscated C Code Contest

ACM Programming Contest

Waterloo Programming Contests
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