How-To Install The KSUID Command Line Tool On A Mac

November - 2021

TODO: Add note that scripts in things like Expans likely won't see the go/bin path, the way around that is to copy the binary to the /usr/local/bin path

I'm using KSUIDs (K-Sortable Unique IDentifiers) instead of UUIDs for my globally unique identifier needs these days. They're shorter than UUIDs and they sort naturally by creation time which is handy for using them as blog post ids.

The directions for installing the command line tool didn't quite get me there. This is the process I used to get up and running.

First thing: you have to have Go installed. Directions for that are here:

Once you've got Go, run the commands from the install section. At the time of writing this (early 2022), they are:

go get -u

go install

(Note: I had to add @latest to get the install to work. I got an error without it.)

Those commands install the tool on your $GOPATH which is not a regular environmental variable. It also wasn't on my path by default so the ksuid command didn't work when I tried to run it.

I fixed this by looking up the $GOPATH with:

go env GOPATH

That pointed me to a newly created go directory in my home directory (i.e. /Users/alan/go). The ksuid executable was in a bin subdirectory (i.e. `/Users/alan/go/bin/ksuid).

I added that path to my PATH by adding this line to the bottom of my ~/.zshrc file (which would be ~/.bash_profile or ~/.bashrc if you're using bash instead of zsh)

export PATH="/Users/alan/go/bin:$PATH"

After that, running ksuid from the command line worked like a champ.


go install
cp "" "/usr/local/bin/ksuid"