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Every Gentoo user knows USE flags. Occasionally I stumble upon IUSE flags, for example, man emerge mention them in the description of an option: --newuse, -N ... USE flags may be toggled by yo...
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gentoo
#1: Initial revision
What are the IUSE flags?
Every Gentoo user knows [**USE** flags](https://wiki.gentoo.org/wiki/USE_flag). Occasionally I stumble upon **IUSE** flags, for example, [`man emerge`](https://dev.gentoo.org/~zmedico/portage/doc/man/emerge.1.html) mention them in the description of an option: > **--newuse, -N** > > ... > > USE flags may be toggled by your profile as well as your USE and package.use settings. If you would like to skip rebuilds for which disabled flags have been added to or removed from IUSE, see the related **--changed-use** option. If you would like to skip rebuilds for specific packages, see the **--exclude** option. They are also mentioned (but not explained) in [`man portage`](https://dev.gentoo.org/~zmedico/portage/doc/man/portage.5.html). What are **IUSE** flags?