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[[Category:OPS435-Python]][[Category:rchan]]
'''Due Date:''' Ask your professor for exact date
==Overview==
Most system administrators would like to know the utilization of their systems by their users. On a Linux system, the userseach user' s login records are normally stored in the binary file /var/log/wtmp. The login records record in this binary file can not be viewed or edited directly using normal Linux text commands like 'less', 'cat', etc. The 'last' command is often used to display the login records stored in this file in a human readable form. Please check the man page of the 'last' command for available options. The following listing is a sample output of running the 'last' commandwith the '-F' flag on:
<pre>
$ last -F
</pre>
In this assignment, your task is to create a python program with well designed functions to produce daily, weekly, and monthly usage report reports by user or by remote host based on the information obtained from the 'last' command or given files which contain similar information as the 'last' command.
== Resource for useful modules ==
* the <b>argparse</b> module
** [https://docs.python.org/3/howto/argparse.html Argparse Tutorial] - should read this first.
** [https://docs.python.org/3/library/argparse.html Argparse API reference information page]
* the <b>time</b> module
** [https://www.tutorialspoint.com/python3/python_date_time.htm Time module Tutorial]
** [https://docs.python.org/3/library/time.html Time module API reference page]
== Instructions ==
=== Program Name and valid command line arguments ===
Name your Python3 program as <code>usage_reportur.py</code>. The program should accept zero one or more "file name" as its command line parametersand other optional parameters as shown below. Your ur.py script should produce the following usage when run with the --help option:* <bpre><code>filename<[rchan@centos7 a1]$ python3 ./code></b>ur.py -husage: ur.py [-h] [-l {user,host}] [-r RHOST] [-t {daily,weekly, ormonthly}] [-u USER] [-v]* <b><code>filename1 filename2 </code></b> etc F [F ... ] Usage Report based on the last command positional arguments: F list of files to be processed optional arguments: -h, --help show this help message and exit -l {user,host}, --list {user,host} generate user name or remote host IP from the given files -r RHOST, --rhost RHOST usage report for the given remote host IP -t {daily,weekly,monthly}, -- any number type {daily,weekly,monthly} type of filenames from 1 to as many as report: daily, weekly, and monthly -u USER, --user USER usage report for the commandgiven user name -v, --verbose tune on output verbosity Copyright 2018 -Raymond Chan </pre>Replace the last line supports.with your own full name
If there one of the file name given is no command line argument"last", your python program should get the login records from the 'last' command with the appropriate flags.
If there is one filename file name provided at the command line, gets read the login records from the contents of the given file. The format of the lines each line in the file should be the same as the output of 'last -FFiw'.
If there is more than one filename file name provided, merges all the files together with the first one at the top and the last one at the bottom. Read and process the file contents in that order in your program.
=== Header ===
All your Python codes for this program must be placed in a <font color='red'><b><u>single source file</u></b></font>. Please include the following declaration by <b><u>you </u></b> as comment in your Python source code file (replace "Student Name" with your own name):
<source>OPS435 Assignment 1 - Winter Summer 2018Program: usage_reportur.py
Author: "Student Name"
The python code in this file (usage_reportur.py) is original work written by
"Student Name". No code in this file is copied from any other source
including any person, textbook, or on-line resource. I have not shared
</source>
<sourcepre>Daily Weekly Usage Report - by Userfrom 10.94.10.25====================================...Week # Usage in SecondsDisplay list of valid user2017 01 30...2017 03 41r) Return to Daily Usage Report2017 05 9</source>When a <b>valid user</b> is selected, display the Daily Usage Report for the selected user.2017 06 11
==== Monthly Usage Report by Remote Host ====
The following is a sample Monthly Usage Report for 10.94.10.25 on host.cty.senecacollege.ca:
== Sample login records file and sample run ==
* [https://scs.senecac.on.ca/~raymond.chan/ops435/a1/ Sample test date files and sample runs]
{| class="wikitable" border== "1"! Task !! Maximum mark !! Actual mark|-| Program Authorship Declaration ||1 |||-| Program usage || 2 |||-| Program Options || 2 |||-| Daily Usage Report by User || 2 |||-| Daily Usage Report by Remote Host || 2 |||-| Weekly Usage Report by User || 2 |||-| Weekly Usage Report by Remote Host || 2 |||-| Monthly Usage Report by User || 2 |||-| Monthly Usage Menu ===Report by Remote Host || 2 |||-| Get Login Records from 'last' || 2 |||-| Get Login Records from files || 2 |||-| Generate user name list || 2 |||-| Generate remote host IP list|| 2 || |-| '''Total''' || 25 ||
== Submission ==
After fully testing your program, submit the your ur.py file on Blackboard