FAQ
Questions we are often asked:
For a course use http://www.colby.edu/acits/fileserverfolder/.
Use the online request form: http://www.colby.edu/its/software/sw-request-form/
The simplest way is to type ‘nproc’. This will return the number of processors on the local machine, if hyperthreading is turned on, it will report twice the number of physical processors. Much more information about the processors can be found by inspecting the file /proc/cpuinfo. It might be best to use ‘less /proc/cpuinfo’ to look around and gain deeper understanding.
There are a few ways to solve this, but the best we know of is documented here http://www.geo.mtu.edu/geoschem/docs/putty_install.html and combines xming with putty.
This appears to be a security setting to prevent indirect rendering in XQuartz. On the host you might see an error such as “XRequest.149: BadValue (integer parameter out of range for operation) 0x0 ERROR) Could not create OpenGL rendering context-> Exiting…”
You can disable this setting on a per user basis by (first shutting down Xquartz) opening a terminal and entering:
defaults write org.xquartz.X11 enable_iglx -bool true
If you are still using an earlier version of xQuartz than 2.8, you should use:
defaults write org.macosforge.xquartz.X11 enable_iglx -bool true
On rare occasions I have to update server based host keys. You will need to remove the old one in order to make a ssh connection.
The ssh key is stored in your home directory, within the .ssh directory, in a file named known_hosts. Either delete the file (‘rm ~/.ssh/known_hosts’) or remove the offending line with your favorite text editor (‘vi ~/.ssh/known_hosts’).
Software Carpentry offers many excellent resources. For the Unix shell (aka bash) try this https://swcarpentry.github.io/shell-novice/ lesson . For git we find this https://swcarpentry.github.io/git-novice/ very helpful.
Find more information in our “how to” here.