[R-pkg-devel] creating indelible file during unit test

2017-12-12 15:47 GMT+01:00 Barry Rowlingson <b.rowlingson at lancaster.ac.uk>:

I think unix makes it impossible for you to create something that even you
can't delete. You may need higher powers ("root") to change the ownership
of the thing you've created.

In a Unix system with administrator rights, you can set the immutable flag:

$ touch foo
$ chmod a-w foo
$ sudo chattr +i foo
$ rm foo
Operation not permitted

Otherwise, you can always remove your own files. Moreover, Thierry may
want the test to be cross-platform... So I think the easiest way to go
is to bypass the R function used to remove the files (file.remove,
unlink, whatever), run the test and then restore it.

I?aki