Linear Operating System [Discontinued]

Discontinuation

Spoiler

LinearOS has been discontinued since I have not developed it at all for over a year, mainly because it was quite a big school year, and I expect this year to be
even bigger. This OS was one heck of a ride for me and I enjoyed every moment of developing it.

Actually, I didn't really discontinue it because it has been inactive for a year, but because I haven't touched it in a year, I don't know how I did 'what' and what goes on where.
It'l be easier to build a new OS instead of trying to revive this one.

Before I stopped development, I had a basic working version, the rebuilt using NovaUI, then Bedrock - I may upload that version if I can find it.

As for me? I may or may not develop a new operating system, since I have moved more into web development than Lua and Java.

Linear Operating System is to be used on a advanced computer.
This operating system is a huge update from my previous operating system. This OS includes a lot more features and is more customizable.

Features
-SHA256 secured user accounts.
-Different desktop background for each user.
-ComputerCraft App Store by oeed. (Doesn't work for me at the moment.)
-Each user has their own programs folder, managed by the Program Manager (From OSROS)
-A clock will reveal itself when clicked on the top right desktop corner.
-Mouse File Browser by BigSHinyToys
-Compatible with any ComputerCraft program.
-Automatic Updates
-Manuel updates
-Sleek and fast installer

Installation

To install Linear OS v1.5.1 run

pastebin run vGdQnj5Y

Paste here.
You can find my GitHub repository for LinearOS here.


Known Issues
-The program manager will freeze and require an entire system reboot if you click uninstall without any programs in the programs folder.
-During updates, the OS won't tell you if you have HTTP on or off.
-I am expecting an error to rise with the returns I put in to prevent the stack overload, since that I haven't seen the overload error, yet I haven't used
the OS enough to find out.

Change-log

Spoiler

Release 1.5.1
-User System: Each user has their own programs folder.
-Desktop: The clock has been replaced with a button ([CLOCK]) which will show the time for 1 second when clicked.
-Settings: Computer Statistics has been renamed to About LinearOS.
-Settings: About LinearOS (formerly Computer Statistics) now shows the computer label, ID and the free space in KB.
-LoadOS: Been shortened, a lot. I removed the bar and replaced it with the LINEAR image.
-LoadOS: The computer will check if all system files are present.
-LoadOS: If there is a missing system file, you will receive an error.
-LoadOS: Removed the user function from the Load OS file and put it in a separate file in apis.
-Startup: The startup file will immediately redirect to linear/system/loados.ls instead of displaying the LINEAR image.
-System: I have put a bunch of returns in to prevent the Java stack overload.
-Several bug fixes.

Release 1.4
-System: Automatic updates fixed.
-System: Automatic updates can be toggled.
-UserScreen: Fixed the print where it would display 'v1.0' instead of 'v1.4'
-FirstTimeUserLogIn;Settings: New color selector
-Desktop: Removed the random bar under the menu
-Several bug fixes

Release 1.3
-System: Automatic updates implemented
-Settings: Boot behavior implemented (You can now either boot or not boot LinearOS on startup)
-Userscreen: Fixed the print where it would display 'v1.0' instead of 'v1.3'
-Installer: Recoded, nice and clean.

Release 1.2
-Update function implemented.

Release 1.1
-User System: Fixed the error where the first user registered will receive an error upon logging in.
-AppStore: Implemented the latest App Store code

Screenshots

Spoiler

The user screen


Desktop with a red color bar for user Luke.


The settings screen with a red bar color for the user Luke


The about LinearOS screen with a red bar color for the user Luke


The desktop screen with the main menu drawn with a red bar color for the user Luke.


The desktop screen with a blue bar color for the user Skull.

Thank you to:

Spoiler

-LBPHacker for the user system (I copied it from my first ever text based OS), program manager help and configuration help, (all from my previous OS - Same as always in Release 1.6)
-oeed for the ComputerCraft App Store (Getting removed for Release 1.6 - It is broken)
-Dragon53535 and KingofGamesYami for the stack overload help (Gonna sorta be, not there in Release 1.6)
-awesumben13 for his NovaUI and never ending help regarding it. (This is for Release 1.6 lol - Not released, never to be released)

Even though this OS has been discontinued, I may still work on a new one, I haven't decided yet.

Release 1.1

-Fixed the bug where if you logged in for the first time with the first registered user, the program would crash (copy failed)
-Replaced the previous ComputerCraft App Store code with the updated code. (Thanks oeed - but I still think it's broken, or maybe it's me. Check your PM)

Release 1.2 Planned Features
Estimated release date: 16/10/2014

-Updates to be implemented.
-Automatic updates to be implemented.
-Different menu bar colors for different users.


Any thoughts on the OS?

Please report any bugs you might have found via this topic or a personal message.

this look amazing.. but one problem some reason i get a error when i try to install.. it says l:500 domain error

vyse, on 13 October 2014 - 05:47 AM said:

this look amazing.. but one problem some reason i get a error when i try to install.. it says l:500 domain error

Thanks.

The fix for your problem
Linear OS cannot be installed on ComputerCraft v1.63 by default. Since the config now has website whistelisting, all websites but computercraft.info and pastebin.com are not allowed by default.
To get around this change 'S:http_whitelist="pastebin.com;*computercraft.info' in the ComputerCraft.cfg to 'S:http_whitelist=*'. This is fixed as of 1.64pr2.

It is because LinearOS uses GitHub for installation, GitHub is not on the domain whistelist.

About v1.2

I have gotten an updater implemented however it is quite buggy. I will recode it this afternoon and try get release 1.2 out by tonight.

I am also going to release a new installer which will scan for an old version of LinearOS and ask to update it, as well as make it error if it cannot reach Github.

I haven't tried this yet, however the screenshots look very pleasing and impressive. :)/>

connordelaneyy, on 13 October 2014 - 09:47 AM said:

I haven't tried this yet, however the screenshots look very pleasing and impressive. :)/>/>

Thanks. There's just one bug on the desktop where for one third of each second, it doesn't register clicks. This is because of the time, it's quite annoying :P/>

This does look really nice! I'll try it out later.

Release 1.2 is now out.

New:
-Update function

This may only be one little update I just wanted to get it out so I can make releasing other updates easier.

Known issues:
-All issues from release 1.1 are carried to release 1.2.

Planned features for release 1.3
-Automatic updates
-Boot behavior
-New installer


Please report any bugs you might have found via this topic or a personal message.

Release 1.3 is now out.

New:
-Automatic updates implemented
-Boot behavior implemented
-New installer

Known issues:
-All issues from release 1.2 are also in release 1.3

Planned features for release 1.4
-Fix the Java error one may encounter after using the exit button on programs a bit too much (All programs, switching from program to program)
-Individual user colors
-Make automatic updates configurable.

Please report any bugs you might have found via this topic or a personal message.

Release 1.4 is out

New:
-Automatic updates are now actually working.
-Automatic updates can be toggled.
-Each user has their own desktop configuration (both the menu bar color and time format)
-New color selector (logging in as new user and settings)

Fixed:
-Removed the random bar under the main desktop menu.

Known Issues:
All issues from release 1.3 are carried here

Please report any bugs you might have found via this topic or personal message.

Your java error is a Stack Overflow, or at least it looks like it will be.

When you keep calling a function over and over and don't allow any of them to end, then the computer's got all these locations of where to pick up on when each is done.

Say i have a program

function foo()
  bar()
end

function bar()
  foo()
end

foo()

The problem with this, is that it saves the point at which foo is first called, right at the bottom, and knows that whenever foo is done, go back there, however in foo, it goes to bar, and at that point it knows that whenever bar is done, go back to this point, however bar calls foo again, and the cycle keeps continuing without anyone finishing and so eventually the computer is going to have too many locations to remember to go back to, that it overflows, and you get an error.

Dragon53535, on 24 October 2014 - 05:27 PM said:

Your java error is a Stack Overflow, or at least it looks like it will be.

When you keep calling a function over and over and don't allow any of them to end, then the computer's got all these locations of where to pick up on when each is done.

Say i have a program

function foo()
  bar()
end

function bar()
  foo()
end

foo()

The problem with this, is that it saves the point at which foo is first called, right at the bottom, and knows that whenever foo is done, go back there, however in foo, it goes to bar, and at that point it knows that whenever bar is done, go back to this point, however bar calls foo again, and the cycle keeps continuing without anyone finishing and so eventually the computer is going to have too many locations to remember to go back to, that it overflows, and you get an error.

Ohh, I thought it was by using shell.run too many times. Thanks for the explanation, but how would I solve this?

BTW, is anyone else having trouble installing apps from the App Store included in this OS? (By oeed ofcourse, it's the standalone

mrdawgza, on 24 October 2014 - 06:41 PM said:

-snip-
Ohh, I thought it was by using shell.run too many times. Thanks for the explanation, but how would I solve this?

To solve it, don't call stuff like that. Use nested loops if you have too. The stack is 256 calls (if I remember correctly), which makes it really hard to overload, unless you use recursion (which is basically what Dragon said). Recursion can also be caused by programs running each other over and over, for example this program:

local pr = shell.getRunningProgram()
print( pr )
sleep( 0.01 )
shell.run( pr )

Will overload, because there are > 256 instances of the program running. Another solution is to use proper recursion (not recommended, of course) by ending the function when it is called.

Eg.

function foo()
  return bar()
end
function bar()
  return foo()
end
foo()

However, the code posted above suffers from a different problem, too long without yielding. CC kills any co routine that doesn't yield after ~10 seconds. os.pullEvent and some of the turtle API yield, preventing this from occurring.

KingofGamesYami, on 24 October 2014 - 07:17 PM said:

mrdawgza, on 24 October 2014 - 06:41 PM said:

-snip-
Ohh, I thought it was by using shell.run too many times. Thanks for the explanation, but how would I solve this?

To solve it, don't call stuff like that. Use nested loops if you have too. The stack is 256 calls (if I remember correctly), which makes it really hard to overload, unless you use recursion (which is basically what Dragon said). Recursion can also be caused by programs running each other over and over, for example this program:

local pr = shell.getRunningProgram()
print( pr )
sleep( 0.01 )
shell.run( pr )

Will overload, because there are > 256 instances of the program running. Another solution is to use proper recursion (not recommended, of course) by ending the function when it is called.

Eg.

function foo()
  return bar()
end
function bar()
  return foo()
end
foo()

However, the code posted above suffers from a different problem, too long without yielding. CC kills any co routine that doesn't yield after ~10 seconds. os.pullEvent and some of the turtle API yield, preventing this from occurring.

Thanks. I'll look into it. (long term)

Release 1.5.1 is out

-User System: Each user has their own programs folder.
-Desktop: The clock has been replaced with a button ([CLOCK]) which will show the time for 1 second when clicked.
-Settings: Computer Statistics has been renamed to About LinearOS.
-Settings: About LinearOS (formerly Computer Statistics) now shows the computer label, ID and the free space in KB.
-LoadOS: Been shortened, a lot. I removed the bar and replaced it with the LINEAR image.
-LoadOS: The computer will check if all system files are present.
-LoadOS: If there is a missing system file, you will receive an error.
-LoadOS: Removed the user function from the Load OS file and put it in a separate file in apis.
-Startup: The startup file will immediately redirect to linear/system/loados.ls instead of displaying the LINEAR image.
-System: I have put a bunch of returns in to prevent the Java stack overload.
-Several bug fixes.

Regarding my previous post, I have removed the clock to allow more smoother desktop access.
As for the rest of the OS, I have reduced the size (considering the new features).

I think the Java Stack overload error will no longer occur but I am not so sure since I haven't spent a lot of time in the OS

Please report any bugs you might have found via this topic or personal message.

Nope, you still have it all over the place.

Spoiler

https://github.com/mrdawgza/linearos/blob/master/1.5.1/linear/system/userScreen.ls#L47
https://github.com/mrdawgza/linearos/blob/master/1.5.1/linear/system/userScreen.ls#L59
https://github.com/mrdawgza/linearos/blob/master/1.5.1/linear/system/userScreen.ls#L100
https://github.com/mrdawgza/linearos/blob/master/1.5.1/linear/system/userScreen.ls#L115

You also have code after "return"s statement that will never be executed, https://github.com/mrdawgza/linearos/blob/master/1.5.1/linear/system/settings.ls#L517

Anavrins, on 31 October 2014 - 03:50 PM said:

Nope, you still have it all over the place.

Spoiler

https://github.com/mrdawgza/linearos/blob/master/1.5.1/linear/system/userScreen.ls#L47
https://github.com/mrdawgza/linearos/blob/master/1.5.1/linear/system/userScreen.ls#L59
https://github.com/mrdawgza/linearos/blob/master/1.5.1/linear/system/userScreen.ls#L100
https://github.com/mrdawgza/linearos/blob/master/1.5.1/linear/system/userScreen.ls#L115

You also have code after "return"s statement that will never be executed, https://github.com/mrdawgza/linearos/blob/master/1.5.1/linear/system/settings.ls#L517

Still have what? The Stack overload? I mainly put the return on the desktop and settings programs because they were used the most.

I may have code after the the returns and it hasn't errored yet

mrdawgza, on 31 October 2014 - 04:23 PM said:

I may have code after the the returns and it hasn't errored yet

It hasn't errored because it will never be run. It is effectively dead code.

com_kieffer, on 31 October 2014 - 05:06 PM said:

mrdawgza, on 31 October 2014 - 04:23 PM said:

I may have code after the the returns and it hasn't errored yet

It hasn't errored because it will never be run. It is effectively dead code.

How do you mean dead? Its working like it did before I put in the returns.

Of course it will be executed. These are equivalent:

return func()

return
func()

Regarding release 1.5.2 (not out yet):
I have planned release 1.5.2 to include desktop icons, however I will require some help with this.
I have tried using Bedrock however I can't seem to get Bedrock working, at all.
I had ideas on using a table inside the current users folder which would store the icons and the programs the icons would lead to, but there are too
many things I can't think of that would go wrong.

Looks good, just add more functionality to it, like programs that will help users to make things or help them in minecraft day-to-day life!

DannySMc, on 21 November 2014 - 11:11 AM said:

Looks good, just add more functionality to it, like programs that will help users to make things or help them in minecraft day-to-day life!

I plan to have a rebuilt OS in the next update :P/>


EDIT
This is my 100th post :D/>/>:D/>:D:D:D

After entering information in the register option it crashes and outputs:

Saving details…
userScreen.ls:95: ././world/computer/165/linear/userfolders/triple/imgs/desktopBg.lsg (No such file or directory)

.3. Fix this, and that FAST!

oscar124, on 22 November 2014 - 04:12 PM said:

After entering information in the register option it crashes and outputs:

Saving details…
userScreen.ls:95: ././world/computer/165/linear/userfolders/triple/imgs/desktopBg.lsg (No such file or directory)

.3. Fix this, and that FAST!

Also this is ingame and not any emulator.

oscar124, on 22 November 2014 - 04:13 PM said:

After entering information in the register option it crashes and outputs:

Saving details…
userScreen.ls:95: ././world/computer/165/linear/userfolders/triple/imgs/desktopBg.lsg (No such file or directory)

.3. Fix this, and that FAST!

-snip (seriously, why did you quote yourself?)-

Also this is ingame and not any emulator.

Pretty sure this is because you are running an older version of computercraft. In 1.6.5, that error should never occur as it automatically creates the directories. Do you know which version of computercraft you are running?

awsumben13, on 22 November 2014 - 04:26 PM said:

oscar124, on 22 November 2014 - 04:13 PM said:

-snip

Pretty sure this is because you are running an older version of computercraft. In 1.6.5, that error should never occur as it automatically creates the directories. Do you know which version of computercraft you are running?

Yeah, this never happens. It doesn't happen to me ingame or in my emulator.
As for the rest of the OS, I'm rebuilding it :D/>

Release 1.6 (WIP)

As for release 1.6, I am expecting it to be finished soon.
I have had to restart the rebuild like 6 times before I finally got onto a proper route.

The current alpha I have right now is only doing one thing, logging in - then it sits braindead…
However, the rebuild will look and work a lot better then Release 1.5.1, since it be using NovaUI by awsumben13.

I am currently implementing multitasking and desktop icons, is there anything else I can try put in?
– Edit: I am postponing the multitasking to a later date.

mrdawgza, on 22 November 2014 - 08:42 AM said:

DannySMc, on 21 November 2014 - 11:11 AM said:

Looks good, just add more functionality to it, like programs that will help users to make things or help them in minecraft day-to-day life!

I plan to have a rebuilt OS in the next update :P/>


EDIT
This is my 100th post :D/>/> :D/>:D:D:D

Yes but make sure to add them in so they are useful, and make sure they can't error and are physically unbreakable?

DannySMc, on 27 November 2014 - 12:22 PM said:

mrdawgza, on 22 November 2014 - 08:42 AM said:

DannySMc, on 21 November 2014 - 11:11 AM said:

-snip

-snip

Yes but make sure to add them in so they are useful, and make sure they can't error and are physically unbreakable?

Hmm? I am rebuilding the OS and it will have useful programs. I am not so sure what you mean by physically unbreakable.

mrdawgza, on 27 November 2014 - 12:34 PM said:

DannySMc, on 27 November 2014 - 12:22 PM said:

mrdawgza, on 22 November 2014 - 08:42 AM said:

DannySMc, on 21 November 2014 - 11:11 AM said:

-snip

-snip

Yes but make sure to add them in so they are useful, and make sure they can't error and are physically unbreakable?

Hmm? I am rebuilding the OS and it will have useful programs. I am not so sure what you mean by physically unbreakable.

Use:

local status, err = pcall(YOUR_FUNCTION)

as this will stop the program from automatically terminating your code?

DannySMc, on 27 November 2014 - 02:36 PM said:

mrdawgza, on 27 November 2014 - 12:34 PM said:

DannySMc, on 27 November 2014 - 12:22 PM said:

mrdawgza, on 22 November 2014 - 08:42 AM said:

DannySMc, on 21 November 2014 - 11:11 AM said:

-snip

-snip

-snip

-snip

Use:

local status, err = pcall(YOUR_FUNCTION)

as this will stop the program from automatically terminating your code?

Well, not sure if my code can be terminated through a program; however this is the prevention I have.

local oldPull = os.pullEvent;
os.pullEvent = os.pullEventRaw;
--
--code goes here - such as proceeding to load the OS
--
os.pullEvent = oldPull;

mrdawgza, on 27 November 2014 - 03:29 PM said:

DannySMc, on 27 November 2014 - 02:36 PM said:

mrdawgza, on 27 November 2014 - 12:34 PM said:

DannySMc, on 27 November 2014 - 12:22 PM said:

mrdawgza, on 22 November 2014 - 08:42 AM said:

DannySMc, on 21 November 2014 - 11:11 AM said:

-snip

-snip

-snip

-snip

Use:

local status, err = pcall(YOUR_FUNCTION)

as this will stop the program from automatically terminating your code?

Well, not sure if my code can be terminated through a program; however this is the prevention I have.

local oldPull = os.pullEvent;
os.pullEvent = os.pullEventRaw;
--
--code goes here - such as proceeding to load the OS
--
os.pullEvent = oldPull;

No if an error occurs it will terminate the program, you need to catch the errors and not let it stop the program!

DannySMc, on 27 November 2014 - 04:40 PM said:

No if an error occurs it will terminate the program, you need to catch the errors and not let it stop the program!

Ohh, I believe this will be supported in the rebuild.

I believe he is using NovaUI and a UICanvas to run each program, in which case errors are handled by the UICanvas object, and shouldn't cause any problems in the OS.

mrdawgza, on 27 November 2014 - 04:49 PM said:

DannySMc, on 27 November 2014 - 04:40 PM said:

No if an error occurs it will terminate the program, you need to catch the errors and not let it stop the program!

Ohh, I believe this will be supported in the rebuild.

Ahh good :)/> Well happy coding, make sure to tell me when you update it so I can look :P/>