warzone ~ # eix --version
eix 0.8.8 (gcc-4.1.1, i686-pc-linux-gnu)
warzone ~ # eix --help
Usage: eix [options] EXPRESSION

Search for packages in the index generated by update-eix.
EXPRESSION is true or false. Packages for which the EXPRESSION gives true,
are included in the final report.

A EXPRESSION can be:
    EXPRESSION [-o|-a] EXPRESSION
    [local-options] PATTERN

Global:
   Exclusive options:
     -h, --help            show this screen and exit
     -V, --version         show version and exit
     --dump                dump variables to stdout
     --dump-defaults       dump default values of variables

   Special:
     -t  --test-non-matching Before other output, print non-matching entries
                           of /etc/portage/package.* and non-matching names
                           of installed packages; this option is best
                           combined with -T to clean up /etc/portage/package.*
     -Q, --quick (toggle)  don't read unguessable slots of installed packages
         --care            always read slots of installed packages
         --cache-file      use another cache-file instead of /var/cache/eix

   Output:
     -q, --quiet (toggle)   (no) output
     -n, --nocolor          do not use ANSI color codes
     -F, --force-color      force colorful output
     -c, --compact (toggle) compact search results
     -v, --verbose (toggle) verbose search results
     -x, --versionsort  (toggle) sort output by slots/versions
     -l, --versionlines (toggle) print available versions line-by-line
         --format           format string for normal output
         --format-compact   format string for compact output
         --format-verbose   format string for verbose output

Local:
  Miscellaneous:
    -I, --installed       Next expression only matches installed packages.
    -i, --multi-installed Match packages installed in several versions.
    -d, --dup-packages    Match duplicated packages.
    -D, --dup-versions    Match packages with duplicated versions.
    -1, --slotted         Match packages with a nontrivial slot.
    -2, --slots           Match packages with two different slots.
    -u, --update          Match packages without best slotted version.
    -O, --overlay         Match packages from overlays.
    -J, --installed-overlay Match packages installed from overlays.
    --in-overlay OVERLAY           Match packages from OVERLAY.
    --installed-in-overlay OVERLAY Match packages installed from OVERLAY.
    --only-in-overlay OVERLAY      Match packages only in OVERLAY.
    -T, --test-obsolete   Match packages with obsolete entries in
                          /etc/portage/package.* (see man eix).
                          Use -t to check non-existing packages.
    -!, --not (toggle)    Invert the expression.
    -|, --pipe            Use input from pipe of emerge -pv

  Search Fields:
    -S, --description     description
    -A, --category-name   "category/name"
    -C, --category        category
    -s, --name            name (default)
    -H, --homepage        homepage
    -L, --license         license
    -P, --provide         provides
    -U, --use             useflags

  Type of Pattern:
    -r, --regex           Pattern is a regexp (default)
    -e, --exact           Pattern is the exact string
    -p, --pattern         Pattern is a wildcards-pattern
    -f [m], --fuzzy [m]   Use fuzzy-search with a max. levenshtein-distance m.
                          (default: 2)

You can contact the developers in #eix on irc.freenode.net or on
the sourceforge-page http://sourceforge.net/projects/eix/.
There is also a wiki at http://eix.sourceforge.net.
This program is covered by the GNU General Public License. See COPYING for
further information.
warzone ~ #