My Little Pocket Universe
So you have your shiny new Mac, and you want to back it up to a Time Machine volume, but you don’t want to have it dangling from a USB cable, a great option is to back up to a linux host using Samba. In the past, you would have used netatalk over the AFP … Read more
If you have tried to export a filesystem from your Mac to be used on another host, you might have had problems getting it to connect. The problem turns out to be simple, though the errors are… obtuse. For me, when I set up a share in /etc/exports, and tried to mount it from a … Read more
Sometimes you need things in life to slow down. Modern terminal emulators are great tools, and they can render text very quickly. This is usually the desired effect. But there are times when you need things to come at you a little slower. I have some old vt100/ansi animations that essentially do nothing when they … Read more
One really nice feature of MacOS is the integration of ssh keys with the OS keychain. This allows you to put a password on your ssh private key(s) that will unlock when you log in. Using this feature, combined with the ssh agent, and you can have a password protected ssh key, and not have … Read more
If you ever have an app that seems to be having problems launching, you can quickly check the integrity with the spctl command: spctl –assess -vv /Applications/<Application>.app As an example, if I wanted to check the integrity of Handbrake (a kick-ass video encoder), the command would be: spctl –assess -vv /Applications/HandBrake.app The output you should … Read more
Unfortunately, since the last OS update for the Mac (Monterey), QuickLook has become especially unstable, especially on my M1 Mac Mini. It doesn’t cause crashes or anything, it simply stops working; especially with video files. However there is a simple solution to the problem. From the Terminal, just run the command (you do not need … Read more
To add an extra layer of security to your server, especially when you are working on a shared client, you can add SSHFP records to the DNS record of the host. This allows the ssh client to pull the hash of the server from DNS to add an extra layer of verification that the host … Read more
If you have the HashKnownHosts option for your ssh client set to yes, then you have a more secure known_hosts file so that a bad actor cannot easily get a list of the hosts you connect to, which is a good idea. However, it also hides it from you, so if you need to remove … Read more
For some bizarre reason, the package management tools for MacOS do not have an option to uninstall in any easy way. However, if you drop into the Terminal, you can do all the steps by hand relatively easily. There is a command called pkgutil that will give you the information you need. To list all … Read more
Traditionally, on *nix systems, cron (or one of its derivatives) is used. It’s possible to use cron on the Mac, but it’s deprecated. launchd is the preferred method. The set up is a little more complex because it’s a bit of XML code, but it’s very straightforward. See the launchd.plist man page or the launchd … Read more