.TH "UFED" "8" "09 Apr 2013" "UFED 0.90" "UFED" .SH "NAME" ufed \- Gentoo Linux USE flags editor .SH "SYNOPSIS" .B ufed .SH "INTRODUCTION" UFED is a simple program designed to help you configure the systems USE flags (see below) to your liking. To enable or disable a flag highlight it and hit space. ufed edits the USE flag settings in your make.conf file only. It can not be used to edit your package.use file. If you have two make.conf files, @GENTOO_PORTAGE_EPREFIX@/etc/make.conf and @GENTOO_PORTAGE_EPREFIX@/etc/portage/make.conf, ufed reads the first, overrides its settings with the second, and writes changes to the second. .B What are USE flags? The USE settings system is a flexible way to enable or disable various features at package build-time on a global level and for individual packages. This allows an administrator to control how packages are built in regards to the optional features which can be compiled into those packages. For instance, packages with optional GNOME support can have this support disabled at compile time by disabling the "gnome" USE flag. Enabling the "gnome" USE flag would enable GNOME support in these packages. The effect of USE flags on packages is dependent on whether both the software itself and the package ebuild supports the USE flag as an optional feature. If the software does not have support for an optional feature then the corresponding USE flag will obviously have no effect. Also many package dependencies are not considered optional by the software and thus USE flags will have no effect on those mandatory dependencies. A list of USE keywords used by a particular package can be found by checking the IUSE line in any ebuild file or by using "equery" from gentoolkit. See http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=2&chap=2 for more information on USE flags. Please also note that if UFED describes a flag (Unknown) it generally means that it is either a spelling error in one of the three configuration files or it is not an officially sanctioned USE flag. Sanctioned USE flags can be found in @GENTOO_PORTAGE_EPREFIX@/usr/portage/profiles/use.desc and in @GENTOO_PORTAGE_EPREFIX@/usr/portage/profiles/use.local.desc. .B What are "global" and "local" USE flags? Global USE flags are called such because they represent functionality that is found in a wider variety of packages. For example, the global flag "cjk" is about adding / not adding support for Eastern-Asian languages, which affects a multitude of various packages. Global flags are described in @GENTOO_PORTAGE_EPREFIX@/usr/portage/profiles/use.desc. Local USE flags are unique package-wise, because the functionality they stand for is only found in that particular package and no other. See @GENTOO_PORTAGE_EPREFIX@/usr/portage/profiles/use.local.desc for a full, per-package listing of all local USE flags. It still happens that a flag which is defined as global is also defined as local for one or more packages. That is because the general definition of the global flag takes on specialized semantics in some particular package. It also occurs that multiple packages define a local flag of the same name - the meaning of the flag differs, however, for each package. .B What are "Masked" and "Forced" flags? ufed allows to view the descriptions of flags that are either masked or forced. If a USE flag does not apply to your system, or is highly experimental, it is "masked" and can not be enabled. .br If a USE flag is mandatory for your system or for a specific package, it is "forced" and can not be disabled. Flags that are masked or forced globally have their names displayed in parentheses, and are prefixed with a '-' if they are masked. If one of these flags is set in your make.conf, you can remove it with ufed. .br If a flag is only masked or forced for specific packages, a lower case 'm' or 'f' in the defaults column (see "Display layout" below) indicates this. .SH "Navigation and control" ufed will present you with a list of descriptions for each USE flag. If a description is too long to fit on your screen, you can use the Left and Right arrow keys to scroll the descriptions. Use the Up and Down arrow keys, the Page Up and Page Down keys, the Home and End keys, or start typing the name of a flag to select it. Use the space bar to toggle the setting. You can apply various filters on the flags to display. A status line on the bottom right will show you which filters are in effect. F5: Toggle display of local / global / all flag descriptions. .br F6: Toggle display of flags supported by at least one installed package / supported by no installed package / all flags. .br F7: Toggle display of masked and forced flags / flags that are neither masked nor forced / all flags. The default is to display all flags that are neither masked nor forced. If ncurses is installed with the "gpm" use flag enabled, you can use your mouse to navigate and to toggle the settings, too. After changing flags, press the Return or Enter key to save your USE flag setup to make.conf, or press Escape to revert your changes. Note: Depending on your system, you may need to wait a second before ufed detects the Escape key or mouse clicks; in some cases, you can use the ncurses environment variable ESCDELAY to change this. See \fBncurses\fR(3X) for more info. .SH "Display layout" ufed attempts to show you where a particular use setting came from, and what its scope and state is. Each line consists of the following elements: (s) flag |DPC|Si| (packages) description .TP \fB(s) : Your selection.\fR .br Either [+] to enable, [-] to disable, or empty to keep the default value. If a flag is enabled or disabled by default, it will be shown as either (+) or (-). .TP \fBflag : The name of the flag.\fR .br If the flag is globally masked, it will be shown as (-flag). If the flag is globally forced, it will be shown as (flag). .TP \fBD : System [D]efault settings.\fR .br These are read from @GENTOO_PORTAGE_EPREFIX@/usr/portage/profiles/.../make.defaults and the \fBebuild\fR(5) IUSE defaults of installed packages. The settings in make.defaults, however, take precedence over the ebuild IUSE settings. .br Masked flags are shown here as 'm', forced flags as 'f'. .TP \fBP : [P]rofile package settings.\fR .br These are read from @GENTOO_PORTAGE_EPREFIX@/usr/portage/profiles/.../package.use. These package specific settings take precedence over the [D]efault settings. .TP \fBC : [C]onfiguration settings.\fR .br These are read from @GENTOO_PORTAGE_EPREFIX@/etc/make.conf, @GENTOO_PORTAGE_EPREFIX@/etc/portage/make.conf and @GENTOO_PORTAGE_EPREFIX@/etc/portage/package.use. These take precedence over the [D]efault and [P]rofile settings, with package.use overriding settings from make.conf. .TP \fBS : [S]cope of the description.\fR .br Local flag descriptions have an 'L' for "local" here. .TP \fBi : [i]nstalled.\fR .br Indicates with an 'i' if either the listed packages are installed on your system, or if at least one package that supports this flag is installed. The latter applies to the global description of the flag. .TP \fB(packages): List of packages that support this flag.\fR .TP \fBdescription : The description of the flag from use.desc or use.local.desc.\fR .PP If the character in any of the D, P or C column is a + then that USE flag was set in that file(s), if it is a space then the flag was not mentioned in that file(s) and if it is a - then that flag was unset in that file(s). Flags marked as [+] or [-] will be saved in your make.conf when you leave the program with an Enter. You can change the order of the (packages) and the description with the F9 key. .SH "REPORTING BUGS" Please report bugs via http://bugs.gentoo.org/ .SH "SEE ALSO" .BR emerge (1), .BR ebuild (5), .BR make.conf (5) .SH "FILES" .TP \fB@GENTOO_PORTAGE_EPREFIX@/etc/make.conf, @GENTOO_PORTAGE_EPREFIX@/etc/portage/make.conf\fR .br Contains user specified USE flags .TP \fB@GENTOO_PORTAGE_EPREFIX@/etc/make.conf.old, @GENTOO_PORTAGE_EPREFIX@/etc/portage/make.conf.old\fR .br This is where ufed places a backup of your make.conf file. .TP \fB@GENTOO_PORTAGE_EPREFIX@/usr/portage/profiles/.../make.defaults\fR Contains system default USE flags. These are the default settings and take precedence over \fBebuild\fR(5) IUSE defaults. .TP \fB@GENTOO_PORTAGE_EPREFIX@/usr/portage/profiles/.../package.use\fR Contains per package default USE flags. These are per package default settings and take precedence over system default USE flags. .TP \fB@GENTOO_PORTAGE_EPREFIX@/etc/portage/package.use\fR Contains user specified USE flags per package. These take precedence over all system defaults and the settings in your make.conf file. .TP \fB@GENTOO_PORTAGE_EPREFIX@/usr/portage/profiles/.../use.mask\fR Restricted USE flags .TP \fB@GENTOO_PORTAGE_EPREFIX@/usr/portage/profiles/.../use.force\fR Enforced USE flags .TP \fB@GENTOO_PORTAGE_EPREFIX@/usr/portage/profiles/use.desc\fR Description strings for global USE flags .TP \fB@GENTOO_PORTAGE_EPREFIX@/usr/portage/profiles/use.local.desc\fR Description strings for local USE flags .SH "AUTHORS" ufed was originally written by Maik Schreiber . .br ufed was previously maintained by .br Robin Johnson , .br Fred Van Andel , .br Arun Bhanu and .br Harald van Dijk . .br ufed is currently maintained by .br Sven Eden . .SH Thanks Paul Varner - for proxy maintaining and support. .br Roman Zilka - for ideas, testing and a lot of patience.