32
votes
"Error while powering on: Internal error." when starting the appliance in VMware Player
Its probably because VMware Authorization service is not running.
To start the VMware Authorization service or to check whether it's running:
Login to the Windows operating system as the ...
- 421
23
votes
Accepted
Missing network adapter
I had the same issue (installed from ISO on Hyper-V). I found that ip50 only checks for an address on eth1. Personally I only had eth0 active. I just updated the ip50 script to check eth0 instead ...
15
votes
Gedit bottom panel terminal plugin missing
Another student, in whose appliance the gedit-plugins package was missing, found that the following two commands solved the problem:
sudo apt-get install -o Dpkg::Options::="--force-overwrite" gedit-...
- 681
13
votes
Accepted
Running "update50" cause "Settings Manager" to dissappear from CS50 2014 Appliance's menu
After too much of a digging, I've finally found a fix to restore "Settings Manager" item to the "50 Menu":
Run in terminal:
gedit /home/jharvard/.config/menus/xfce-applications.menu
Then, find the ...
- 287
11
votes
Accepted
How to Install the Tools for the Course on Ubuntu
For Ubuntu 14.04
sudo apt-get install clang nodejs
Set up the cs50 library: https://cs50.readthedocs.io/libraries/cs50/c/
Download check50 from: https://github.com/robotmayo/check50
Set aliases ...
- 238
10
votes
Why does check50 fail with status code 400?
Status 400 usually refers to an error during the connection of your appliance to the "back-end" that controls the status of your requests.
You can get such error for various reasons:
1 - ...
- 1,156
9
votes
Accepted
Stopping an infinite loop while running
Yes. To force-exit a running program, press Ctrl + C from your keyboard!
- 17.4k
8
votes
Accepted
How can I fix "Error while powering on: Internal error" when starting the CS50 Appliance in VMware Player?
I started the VMware Player in Administrator Mode and it worked.
- 196
8
votes
Missing network adapter
A fix for this on your end would be to add the additional networks in the VBox settings for the VM; network adaptor 2 should be Host-Only; (if nothing shows up in Adapter 2's name go to File > ...
- 1,156
7
votes
Accepted
Pset8 Mashup Map Not loading
if anyone has run into the issues i have stated above there is a simple fix. Doing some searching around and trying to access urls using https showed me my appliance was not ‘secure’. By going into ...
- 97
5
votes
Why does check50 fail with status code 400?
Did you update the CS50 appliance? Try running update50 in the terminal.
5
votes
Accepted
No internet connection in the appliance?
Try this:
sudo sed -i.orig 's/^nameserver.*$/nameserver 8.8.8.8/' /etc/resolv.conf
And then try update50 again.
- 741
5
votes
Accepted
How to make my makefile match the Appliance
When run without a makefile, Make takes its cues from environment variables set in your shell (specifically, those loaded in /etc/profile.d/appliance50.sh).
To get the same behavior from Make as it ...
- 176
5
votes
How do I get the cs50 appliance library to work
Did you follow the instructions in pset1 that said to run update50 first?
There's an update that will fix your gedit built-in terminal to use the correct compiler commands.
Also, jharvard@ubuntu is ...
- 18.3k
4
votes
Accepted
Configure appliance for QWERTY layout (UK)
Go to 50 Menu > Settings > Keyboard
Open up the Layout tab
Uncheck Use system defaults and choose your own Keyboard model
from the menu
Under Keyboard layout click the Add button and from the
...
- 17.4k
4
votes
CS50 Appliance in VirtualBox Resolution
Try any of the following tweaks:
You must install guest additions. In the "Devices" menu in the virtual machine's menu bar, VirtualBox has a handy menu item named "Install guest additions", which ...
- 483
4
votes
"Error while powering on: Internal error." when starting the appliance in VMware Player
right click on the App. and Run as admin.
OR from run type services.msc
and run VMware Authorization Service
4
votes
Accepted
Is it possible to resubmit psets from 2014 still using the Fedora appliance?
You can perfectly re-submit your code using any machine (the OS is not relevant in this case) from where you have access to your 'C' files: all you need is a working (modern) browser (Chrome would do ...
- 1,140
4
votes
Accepted
Error: Gedit not opening on VirtualBox Ubuntu 14.04
The VirtualBox version of the appliance currently has an issue with the gedit install. Staff are aware of it and are working on a fix.
In the meantime, run this:
sudo apt-get update
sudo apt-get ...
- 18.3k
4
votes
Where do i download cs50 appliance version 2014
It is a bit hidden, you actually need to enter one of the links for instructions on how to install them. The link to the current image file: http://mirror.cs50.net/appliance50/2014/releases/26/...
4
votes
Accepted
week one( no adder or conditions in cs50 library
An example of the command is when you enter an instruction on the terminal command line, like make testfile. If there is a file called testfile.c or a rule to build it in the makefile file, then make ...
- 63.1k
4
votes
Accepted
Attempting to access https://CS50.io IDE
I had the same problem.
I solved the "failed to write" error by issuing this command in the terminal in the lower part of the window:
sudo chown ubuntu ./.c9
After that, i did refresh the page and ...
- 131
4
votes
how to close port 8080?
As far as i can tell you can either use another port than 8080 or better stop the server using that port. The command for the latter is:
apache50 stop
This is somehow not written in the pset6 ...
- 41
3
votes
How to Install the Tools for the Course on Ubuntu
To configure on 64-bit ubuntu 14.04LTS
Install java
Install LAMP.
Install node.js
Install clang : sudo apt-get install clang
Install CS50 Library :
apt-get install gcc
wget http://mirror.cs50....
- 170
3
votes
How to Install the Tools for the Course on Ubuntu
I wrote a small BASH script for setting up the appliance programs into existing Ubuntu OS. This script i had wrote, specially to configure my own Ubuntu 14.04 but will work for Raspberry Pi 2 Ubuntu ...
3
votes
CS50 Appliance in VirtualBox Resolution
You may follow the steps here to install the guess additions.
First, download the guest additions iso from here!
System preparations
After you have installed your Linux Guest system, there ...
3
votes
Accepted
What does -std=c99 command do?
The C programming language has many versions. -std=c99 lets the compiler know that we're using the standard version C99 (released in 1999).
See more:
http://en.m.wikipedia.org/wiki/C99
- 17.4k
3
votes
Accepted
How to Download and Run the CS50 Appliance?
Don't worry if your'e a total noob, most of us who joined CS50 were the same, so, here's your answer.
I recommend you simply refer to the CS50 appliance manual for all your needs, its located here: ...
- 1,170
3
votes
How can I fix "Error while powering on: Internal error" when starting the CS50 Appliance in VMware Player?
I restarted my computer and it worked!
- 205
3
votes
What does this VirtualBox/Appliance-19 Error Message mean?
Hmm there's a very recent thread about this:
https://forums.virtualbox.org/viewtopic.php?f=6&t=62615
Apparently Symantec Endpoint Protection 12.1 and Comodo Internet Security 7 are incompatible ...
- 141
Only top scored, non community-wiki answers of a minimum length are eligible