Free time strategy software for linux

TimeTracker is an application loosely based on TimeKeeper, a Windows application used to track the time you spent on a task.

Being a Linux user and not willing to install Wine, I decided to hack my own version.

Ruby Time Tracker is a stable and complete time tracking system for small businesses that invoice for time spent by several employees on many projects.

Future Plans

Planned upgrades include:

Locking down past periods so that no entries can be made or changed after invoicing
Custom periods so that users may define billing cycles for thier company
Reminders sent to employees who have not made entries daily or at the end of a billing cycle

Two Versions

There are currently two versions in development. The professional version uses a MySQL database and requires some knowlege of installing and configuring Ruby on Rails applications to install. The lite version includes an installer that will install and configure an SQLight database and a webrick web server for easy installation. Development is being done on the professional version and periodically the lite version will be updated to include new functionality.

Time Sheets are free linux timesheets for project tracking.
Automate Project management, Billing and Payroll with your Free Web Employee Timesheets! Use your Free Web Timesheets to Discover secret profits in your business and ease billing now.
Automate Payroll with improved setup features. 100% web-based Linux Employee Timesheets program.
Main features:
User Interface
- Complete redesign including user-friendly organization and navigation
- Collapsible, customizable Toolbar with interactive calendar and timesheet status data
- Scrolling and single day display options for long periods that alleviate "wide" timesheet and compliance problems
- Dynamic, on-screen options to sort and display data in a variety of formats
Administrator Interface
- Ability to copy settings from existing users, projects, etc. for quick creation and set up of new items
- Access to all set up options on a single user or project creation screen
- Various types of reports consolidated and accessible under the main Reports tab
- Improved search, select and assign capabilities for automated approval plans, etc.
- Ability to search for, select and submit multiple timesheets for approval with a single click
- Improved Help menus and Sitemap that act as guides to the new navigation
Look and Feel
- Hierarchical tab navigation with the option to customize the color scheme
- Standard icons and page layout throughout the product
- Continued flexibility for branding and customizing the interface to fit organizational needs
Miscellaneous
- Leave request automation with supervisor review
- Manager reporting on all outstanding time off scheduled
- Option to subtotal by several different parameters in reports
- International character support
- Performance improvements via setting to limit number of items displayed in dropdown menus
- Advanced options for editing approved timesheets to meet specific auditing requirements

Time::Format is a Perl module for easy-to-use date/time formatting.

SYNOPSIS

use Time::Format qw(%time %strftime %manip);

$time{$format}
$time{$format, $unixtime}

print "Today is $time{yyyy/mm/dd}n";
print "Yesterday was $time{yyyy/mm/dd, time-24*60*60}n";
print "The time is $time{hh:mm:ss}n";
print "Another time is $time{H:mm am tz, $another_time}n";
print "Timestamp: $time{yyyymmdd.hhmmss.mmm}n";
%time also accepts Date::Manip strings and DateTime objects:
$dm = Date::Manip::ParseDate(last monday);
print "Last monday was $time{Month d, yyyy, $dm}";
$dt = DateTime->new (....);
print "Heres another date: $time{m/d/yy, $dt}";
It also accepts most ISO-8601 date/time strings:
$t = 2005/10/31T17:11:09; # date separator: / or - or .
$t = 2005-10-31 17.11.09; # in-between separator: T or _ or space
$t = 20051031_171109; # time separator: : or .
$t = 20051031171109; # separators may be omitted
$t = 2005/10/31; # date-only is okay
$t = 17:11:09; # time-only is okay
# But not:
$t = 20051031; # date-only without separators
$t = 171109; # time-only without separators
# ...because those look like epoch time numbers.
%strftime works like POSIXs strftime, if you like those %-formats.
$strftime{$format}
$strftime{$format, $unixtime}
$strftime{$format, $sec,$min,$hour, $mday,$mon,$year, $wday,$yday,$isdst}

print "POSIXish: $strftime{%A, %B %d, %Y, 0,0,0,12,11,95,2}n";
print "POSIXish: $strftime{%A, %B %d, %Y, 1054866251}n";
print "POSIXish: $strftime{%A, %B %d, %Y}n"; # current time
%manip works like Date::Manips UnixDate function.
$manip{$format};
$manip{$format, $when};

print "Date::Manip: $manip{%m/%d/%Y}n"; # current time
print "Date::Manip: $manip{%m/%d/%Y,last Tuesday}n";
These can also be used as standalone functions:
use Time::Format qw(time_format time_strftime time_manip);

print "Today is ", time_format(yyyy/mm/dd, $some_time), "n";
print "POSIXish: ", time_strftime(%A %B %d, %Y,$some_time), "n";
print "Date::Manip: ", time_manip(%m/%d/%Y,$some_time), "n";

This module creates global pseudovariables which format dates and times, according to formatting codes you pass to them in strings.

The %time formatting codes are designed to be easy to remember and use, and to take up just as many characters as the output time value whenever possible. For example, the four-digit year code is "yyyy", the three-letter month abbreviation is "Mon".

The nice thing about having a variable-like interface instead of function calls is that the values can be used inside of strings (as well as outside of strings in ordinary expressions). Dates are frequently used within strings (log messages, output, data records, etc.), so having the ability to interpolate them directly is handy.

Perl allows arbitrary expressions within curly braces of a hash, even when that hash is being interpolated into a string. This allows you to do computations on the fly while formatting times and inserting them into strings. See the "yesterday" example above.

The format strings are designed with programmers in mind. What do you need most frequently? 4-digit year, month, day, 24-based hour, minute, second -- usually with leading zeroes. These six are the easiest formats to use and remember in Time::Format: yyyy, mm, dd, hh, mm, ss. Variants on these formats follow a simple and consistent formula. This module is for everyone who is weary of trying to remember strftime(3)s arcane codes, or of endlessly writing $t[4]++; $t[5]+=1900 as you manually format times or dates.

Note that mm (and related codes) are used both for months and minutes. This is a feature. %time resolves the ambiguity by examining other nearby formatting codes. If its in the context of a year or a day, "month" is assumed. If in the context of an hour or a second, "minute" is assumed.

The format strings are not meant to encompass every date/time need ever conceived. But how often do you need the day of the year (strftimes %j) or the week number (strftimes %W)?

For capabilities that %time does not provide, %strftime provides an interface to POSIXs strftime, and %manip provides an interface to the Date::Manip modules UnixDate function.

If the companion module Time::Format_XS is also installed, Time::Format will detect and use it. This will result in a significant speed increase for %time and time_format.

Time::Skew is a Perl module that computes local clock skew with respect to a remote clock.

SYNOPISI

use Time::Skew

# Init Convex Hull and timing data
my $hull=[];
my $result={};

# Iterate data point introduction
Time::Skew::convexhull($result,$datapoint,$hull);

This module supports the computation of the skew between two clocks: the (relative) skew is the speed with which two clocks diverge. For instance, if yesterday two clocks, at the same time, showed respectively 10:00 and 10:05, while today when the former shows 10:00 the latter shows 10:04, we say that their relative skew is 1 minute/24 hours, roughly 7E-4.

The module contains one single subroutine, which accepts as input a pair of timestamps, associated to a message from host A to host B: the timestamps correspond to the time when the message was sent, and to the time when message is received. Each timestamp reflects the value of the local clock where the operation takes place: the clock of host A for the send, the clock of B for the receive.

Please note that the module does _not_ contain any message exchange facility, but only the mathematics needed to perform the skew approximation, once timestamps are known.

The subroutine takes as argument:

a reference to a hash where values related to the timing of the network path from A to B;
a 2-elems array (a data point in the sequel) containing the timestamp of the receive event, and the differece between the send timestamp and the receive timestamp for one message;
a stack containing some data points, those that form the convex hull.

The usage is very simple, and is illustrated by the following example:

#!/usr/bin/perl -w
use strict;
use Time::Skew;

# Initialize data
my $hull=[];
my $result={};
while ( 1 ) {
# Exchange message and acquire a new data point
my $datapoint = acquire();
# Call the convexhull subroutine
Time::Skew::convexhull($result,$datapoint,$hull);
# After first message some results are still undefined
( defined $result->{skewjitter} ) || next;
# here you can use the results

};
}

The data returned in the "result" hash is the following:

result->{skew} the clock skew;
result->{skewjitter} the variance of the skew estimate, used to estimate convergence;
result->{jitter} difference between the current delay and the previous delay;
result->{delay} the communication delay, decremented by a constant (yet unknown) value, used to compute communication jitter;
result->{elems} the number of data points in the convex hull;
result->{select} the index of the data point in the convex hull used to compute the skew;
result->{itimestamp} the timestamp, first element in the data point just passed to the subroutine;
result->{delta} the timestamp difference, second element in the data point just passed to the subroutine;

The data returned in the "hull" stack is a series of data points, selected from those passed to successive calls of the subroutine. The number of data points in the "hull" stack usually does not exceed 20 units.

The algorithm is very fast: each call consists in scanning at most all data points in the "hull" stack, performing simple arithmetic operations for each element.

The algorithm must be fed with a sequence of data points before returning significant results. The accuracy of the estimate keeps growing while new data points are passed to the subroutine. A rough rule of thumb to evaluate estimate accuracy is to observe the skew jitter, and assume it corresponds to the skew estimate accuracy. Paths with quite regular communication delay (small jitter) converge faster.

Time::Beat is a Perl module to convert between standard time and Swatch ".beat" time.

Time::Beat is a module to convert normal time to and from .beats, of which there are a thousand in a day. It can change normal time in time() format to .beats, and .beats into either 24-hour or 12-hour normal time.

SYNOPSIS

use Time::Beat qw(beat time24 time12);

my $time_in_beats = beats($time);

my $beats_in_24hr_time = time24($beat);

my $beats_in_12hr_time = time12($beat);

METHODS

There are three methods in Time::Beat.

beats($time)

beats will give you the current time in .beats if you do not specify a time string. If you specify a string in time() format it will return that particular time in .beats. The basic algorithm for doing this is to take the time in GMT+1 hour, convert it into seconds, and divide by 86.4.

time24($beat)

time24 takes a 3-digit beat time and outputs a 24-hour time along the lines of "12:34:56". The hours will have leading noughts.

time12($beat)

time12 takes a 3-digit beat time and outputs a 12-hour time along the lines of "12:34:56 am" or "12:34:56 pm". Hours do not have leading noughts.

Multiple Time Sheets is a simple tool to help you keep track of how many hours you work and for whom.
It differs from most time-tracking software because its designed to work like paper that magically totals up hours.
Main features:
- Uses text files, requiring no database.
- Supports only one user per app, for simpler code.
- Sends and tracks invoices, and payments thereof.
- Features a rudimentary to-do list that displays your list as an outline.
- Sends you a backup of your data automatically.
- Assume the user prefers free-form data entry in text files rather than typing into forms.
- Uses the htmlMimeMail.php class by Richard Heye (phpguru.org).
- CSV and OPML exports of some data.
- Automatic hyperlinking from MTS to your favorite web-based software.
Enhancements:
- This release added a feature that replaces text patterns with links so that strings like "Bug 10" can link to a bug tracking application.
- CSV export was added for the timesheet along with OPML export for the to-do list.

Blackjack basic strategy calculator project is a Monte Carlo basic strategy calculator.
bsc finds the Blackjack strategy through the Monte Carlo method.
It analyzes each situation with adaptive depth, and is generally optimized for speed.
The rules are hard coded for the authors local casino; adding others or changing them is left for others to do.
It seems to find the correct strategy, but the house edge appears a bit wrong.
Main features:
- no double after split
- double only 9..11
- split as often as you want
- European no hole card
- no surrender
- dealer stands on soft 17
- perfect continous shuffle machine (CSM)
- 6 decks