If you are not using Client Management, use the defaults command in Terminal to point unmanaged client computers to a Software Update server. You must be an administrator to use the defaults command. On the unmanaged client, open Terminal enter the following command: sudo defaults write /Library/Preferences/com.apple.SoftwareUpdate CatalogURL http://su.example.com:8088/index.sucatalog Substitute your Software Update Server’s fully…
It may be easier to edit html or other code by enabling color syntax within VIM. You can do this for individual users by creating a .vimrc file within the root of their home directory and adding the following. syntax on This can also be accomplished system wide by editing the /etc/vim/vimrc file and uncommenting…
Sometimes you may want to run a command on a remote machine that requires root level permissions. This can be done with SSH with the -t flag to force a psuedo tty ssh -t remote-server ‘/path/to/command’ Make sure to single quotes are part of your command. You will be prompted for the user password and…
Often it is helpful to tunnel certain traffic through an SSH tunnel. If you are on a public wifi connection where you may fear someone else intercepting your email or web traffic. Or in a work environment which may block access to a site you must access through your web browser. With an SSH tunnel,…
Computer data and file size is normally measured in binary code using the binary number system (counted by factors of two 1, 2, 4, 8, 16, 32, 64, etc), the prefixes for the multiples are based on the metric system! The nearest binary number to 1,000 is 2^10 or 1,024; thus 1,024 bytes was named…
The following table shows the conversion of data rates between Kilobytes per second (KBps) and Megabits per second (Mbps). To compute the Mbps, multiply KBps times 0.008192. Kilobits (Kbps) Bits (bps) Megabits (Mbps) Bytes (Bps) Kilobytes (KBps) Megabytes (MBps) 28 28,000 0.028 3,500 3.41 0.00334 30 30,000 0.03 3,750 3.66 0.00358 56 56,000 0.056 7,000…
My work environment has heavily restricted access to the outside from any of our machines. I am often spinning up new Linux machines for testing purposes and getting temporary firewall access to a specific IP is a process I do not enjoy. As a work around, I have tunneled my YUM updates and Repos through…
Mac OS X defaults to hiding the users Library directory. No doubt, this was changed to keep novices from deleting necessary system files. Those that wish may show the ~/Library with the following command from Terminal. chflags nohidden ~/Library/ If you wish to return to default settings you can hide the ~/Library with the following…
Sometimes it is easier to update your Mac computers from the command line, especially if this is being done remotely. From the terminal command: sudo softwareupdate -i -a The i flag stands for install. The a flag is for all available updates.
# passwd -x -1 <account>