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haas:fall2018:unix:projects:timeonline

Corning Community College

CSCS1730 UNIX/Linux Fundamentals

~~TOC~~

Project: TIMEONLINE

Objective

To employ your growing shell script abilities in calculating a user's time spent online (on lab46) for the semester.

Project

I would like you to write a script that:

  • accepts a user:
    • via command-line
    • via input (if there is nothing on the command-line, prompt the user to enter one)
  • verifies provided user is a valid user
    • in the case of an invalid user, display an error message and exit
  • calculates the time on-line for said user for the months of August, September, October, November, and December.
    • be sure these values are displayed somewhere in the script's output (both broken out by month, and total for semester)
    • determine total resulting time in days, hours, and minutes.
  • display data in the form of a histogram, with one line per month, visualizing the number of logins
    • you may scale it accordingly to better fit on a standard size terminal
    • be sure to show the total number of logins for that month

Example output may look something like:

lab46:~/src/unix/timeonline$ ./timeonline jbob
error: no such user 'jbob' exiting ...
lab46:~/src/unix/timeonline$ ./timeonline jsmith12
Aug|**** (37)
Sep|****** (61)
Oct|******* (73)
Nov|******* (74)
Dec|** (17)

Aug: 0 days, 14 hours, 31 minutes
Sep: 2 days, 3 hours, 17 minutes
Oct: 2 days, 5 hours, 58 minutes
Nov: 3 days, 1 hour, 47 minutes
Dec: 0 days, 5 hours, 32 minutes

Total: 8 days, 7 hours, 5 minutes

Submission

Submission criteria are as follows:

  • Script is organized and easy to read
  • Indentation to enhance readability
  • Comments to explain what is going on
  • Submit on time!
  • submit using submit tool, project name timeonline
haas/fall2018/unix/projects/timeonline.txt · Last modified: 2014/12/06 14:39 by 127.0.0.1