To prevent ssh from disconnecting while idle, add the following to ~/.ssh/config:
Host *
ServerAliveInterval 30
TCPKeepAlive noThis solution is alse useable in any Linux/BSD/*nix environment. If you want to implement this not only on your own user, as a sysadmin, add the above to /etc/ssh/ssh_config instead.
Unfortunately there is no version of Zello available for Mac OSX but it is possible to run the Windows version using Wine.
cd Downloads
wine ZelloSetup.exewine C:\\Program\ Files\ \(x86\)\\Zello\\Zello.exe
When installing a software update for Mac OSX “El Capitan” that required a system reboot to install, it seemed stuck on the white screen displaying a text “Installing software update: About 11 minutes”.
Mac OSX installing software update
The solution was quite simple – just wait. It seems the time calculation is really off. After about an hour it stepped down to 10 minutes, so it’s not stuck. It just takes a lot longer than the system calculates.
When you are connected to the Internet through a network with limited bandwidth or restricted data plan it is desirable to reduce the data consumption. In this case, disabling iCloud sync is something you want to do.
In Windows, you can easily mark a wifi network as limited by data plan and this will automatically inhibit Windows updates to download and it will also make cloud services not to sync.
In the world of Apple and Mac OSX, it seems like Apple assumes that when you are on a wireless or wired network, bandwidth is unlimited. Period. If this only was true, what a great world to live in! The news is that this is not how it works in the real world. Unfortunaly, because of this there is no function to disable or pause iCloud syncing at all. A simple feature present in all other cloud services like One-drive, Dropbox etc.
The solution, which works excellent is called TripMode. This piece of software gives you the control you want over any application using your Internet data.
A Mac suddenly displayed the message “Your startup disk is almost full” to the user. However, there should be plenty of space left on the disk. Something was eating up the disk rapidly.
Some investigation using Activity Monitor showed that a process called fontworker was also eating a large chunk of the CPU as well. In the Terminal I entered the command:
cd /
sudo du -sm *
to find out what folder was using most space (the command requires admin privileges so it will prompt you for the administrator password). I then entered:
cd the-folder-name
sudo du -sm *
to find out what was using most space in the largest folder (replaced by “the-folder-name” in the example above). I repead the steps until I found a large file containing the fonts database occupying about 85 GB which is way more than normal.
It turned out the fonts cache had become corrupt.
To rebuild the font cache was easy. By simply restarting the computer into Safe mode and then reboot it back into normal mode, the font cache was cleared and rebuilt, solving both the disc and CPU problem.
Problem with the fonts sometimes occurs after OSX reinstall which in this particular case had been performed about a week ago.
USB memory sticks or external disks that has been formatted on a Mac might not be readable if you connect it to a Windows computer. The reason is that the Mac has formatted it using a file system unknown by Windows.
To read the disk you can use the free tool hfsexplorer.
hfsexlorer