Avoid creating a conflicting alias

[PierreRustOrange]

This fixes issue #88 .

Please note that while I tested it locally, I did not perform an end-to-end test, as the get.sh script downloads directly from github.

[derek]

Thank you for your contribution. I've just checked and your commit doesn't appear to be signed-off. That's something we need before your Pull Request can be merged. Please see our contributing guide.
Tip: if you only have one commit so far then run: git commit --amend --signoff and then git push --force.

[alexellis]

Thanks for the PR. Just need to check that whereis exists on Git Bash, MacOS and Linux (bash)

[alexellis]

Thanks to @mehyedes, it seems that whereis is not supported in Git Bash, so perhaps where could substitute? https://stackoverflow.com/questions/54485435/git-bash-whereis-command-not-found

[mehyedes]

Using which would be better here IMHO, as it is available also on Git Bash.
Besides, we're just trying to find out if the alias exists, so the format of the output is not that important to us.
We can use the exit code of the which command, to see if it ran successfully by checking the value of $?. If it returns 1, it means the symlink does not exist in the path:

$ ln -nfs /usr/bin/docker /usr/bin/docker-alias
$ which docker-alias
/bin/docker-alias
$ echo $?
0

That should also work on Git Bash

[derek]

Thank you for your contribution. I've just checked and your commit doesn't appear to be signed-off. That's something we need before your Pull Request can be merged. Please see our contributing guide.
Tip: if you only have one commit so far then run: git commit --amend --signoff and then git push --force.

[PierreRustOrange]

OK, you're right, which is enough and it makes the code simpler. I've pushed the corresponding modification.

[mehyedes]

Thanks ! Looks fine now 👍

[Waterdrips]

LGTM. Tested on Linux.

[alexellis]

Approved