Revision as of 23:10, January 10, 2014 by Duncan.Britton (Talk)

Getting started with emerge

Emerge is the front-end for funtoo's portage package manager. With emerge it is easy to install, update or remove packages.

Update package database

Sync local package database. This will update your local Portage tree with the latest Funtoo ebuilds.

# emerge --sync

Search packages

Search packages by name.

# emerge -s firefox
# emerge --search firefox

Search packages by description.

# emerge -S web browser
# emerge --searchdesc web browser

Install packages

Install package.

# emerge firefox

Install multiple packages.

# emerge firefox thunderbird

Install package. Ask for confirmation before performing any changes. Show verbose output.

# emerge -av firefox
# emerge --ask firefox

Remove packages

Remove package.

# emerge -C firefox
# emerge --unmerge firefox

Remove package. Ask for confirmation before performing any changes.

# emerge -aC firefox

Remove orphaned packages. Ask for confirmation before performing any changes.

# emerge -a --depclean

Update packages

Update all packages.

# emerge -uDN @world

Update all packages. Ask for confirmation before performing any changes. Show verbose output.

# emerge -uavDN @world

Emerge options

Updates the portage tree that is located in /usr/portage by default.
--search -s
Searches for matches of the supplied string in the portage tree.
--searchdesc -S
Matches the search string against the description field as well as the package name.
--ask -a
Ask for confirmation before performing any changes.
--pretend -p
Instead of actually performing the merge, simply display what *would* have been installed if --pretend weren't used.
--unmerge -C
Removes all matching packages.
--update -u
Updates packages to the best version available, which may not always be the highest version number due to masking for testing and development.
--deep [DEPTH] -D
force emerge to consider the entire dependency tree of packages, instead of checking only the immediate dependencies of the packages.
--newuse -N
Tells emerge to include installed packages where USE flags have changed since compilation.
--depclean -c
Remove orphaned packages. Cleans the system by removing packages that are not associated with explicitly merged packages.
Automatically write package.use settings as necessary to satisfy dependencies.
--resume -r
Resumes the most recent merge list that has been aborted due to an error.
--jobs[=JOBS] -j [JOBS]
Specifies the number of packages to build simultaneously.
--load-average [LOAD]
Specifies that no new builds should be started if there are other builds running and the load average is at least LOAD (a floating-point number).


Emerge can be configured with /etc/portage/make.conf

# nano /etc/portage/make.conf
CFLAGS="-march=native -O2 -pipe"
CXXFLAGS="-march=native -O2 -pipe"

EMERGE_DEFAULT_OPTS="--jobs 2 --load-average 2"
INPUT_DEVICES="evdev synaptics"
VIDEO_CARDS="intel i965"
LINGUAS="en en_US en_GB"

USE="mmx mmxext sse sse2 sse3 ssse3 threads alsa X gtk xcb dri opengl vaapi udev \
     svg x264 xvid gstreamer webm vpx icu bash-completion vim-pager \
     -gnome -xscreensaver -cups -fortran -deprecated -iptables -ipv6 -geoloc \
     -mta -sendmail -kmod -tiff -live -quicktime -real -gpm -themes"</pre>

Per-package use flags can be configured with /etc/portage/package.use
<pre>x11-wm/dwm savedconfig
media-sound/ncmpcpp visualizer clock taglib</pre>

If you want to install package that has not been tested on your architecture you need to edit /etc/portage/package.accept_keywords
<pre>=app-misc/screenfetch-9999 **</pre>

== Further info ==
For further info see emerge man page.
<console>$ man emerge