Install.

One line, on a Mac or Linux:

The installer picks the download for your machine, checks it against its published checksum (and stops if it doesn't match), and puts fieldtrip in ~/.local/bin. No admin password, and it doesn't touch your shell. The first fieldtrip add asks before adding ~/.local/bin to your PATH.

Optional settings: FIELDTRIP_VERSION=1.2.3 for a specific version, FIELDTRIP_BIN_DIR=~/bin to install somewhere else.