Shell command completion is provided by the script at /misc/completion/ipfs-completion.bash.
The simplest way to see it working is to run
source misc/completion/ipfs-completion.bash straight from your shell. This
is only temporary and to fully enable it, you'll have to follow one of the steps
Bash on Linux
For bash, completion can be enabled in a couple of ways. One is to copy the
completion script to the directory
~/.ipfs/ and then in the file
It will automatically be loaded the next time bash is loaded.
To enable ipfs command completion globally on your system you may also
copy the completion script to