Anpassa paketlistan

Anpassa paketlistan
	Anpassa aptitude

Anpassa hur paket visas
Anpassa pakethierarkin
Anpassa hur paket sorteras

The package list can be heavily customized: how packages are displayed, how the package hierarchy is formed, how packages are sorted, and even how the display is organized are all open to change.

Anpassa hur paket visas

This section describes how to configure the contents and format of the package list, status line, and header line.

The format of each of these locations is defined by a “format string”. A format string is a string of text containing %-escapes such as %p, %S, and so on. The resulting output is created by taking the text and replacing the %-escapes according to their meanings (given below).

A %-escape can either have a fixed size, in which case it is always replaced by the same amount of text (with extra space characters added to fill it out as necessary), or it can be “expandable”, meaning that it takes up the space that is not claimed by fixed-size columns. If there are several expandable columns, the extra space is divided evenly between them.

All %-escapes come with a default size and/or expandability. The size of a %-escape can be changed by writing it between the % and the character identifying the escape; for instance, %20V generates the candidate version of the package, 20 characters wide. Placing a question mark (?) between the % and the character identifying the escape causes the column's “basic” width to vary depending on its content. Note that the resulting columns might not line up vertically!

If you want a particular %-escape to be expandable, even though it normally has a fixed width, place a pound sign (ie, “#”) immediately after it. For instance, to display the candidate version of a package, no matter how long it is, use the format string %V#. You can also place # after something that is not a %-escape; aptitude will “expand” the text preceding the # by inserting extra spaces after it.

In summary, the syntax of a %-escape is:

%[width][?]code[#]

The configuration variables Aptitude::UI::Package-Display-Format, Aptitude::UI::Package-Status-Format, and Aptitude::UI::Package-Header-Format define the default formats the package list, the header at the top of the package list, and the status line below the package list respectively.

The following %-escapes are available in format strings:

	Notera
	Some of the descriptions below refer to “the package”. In the GUI, this is either the package being displayed or the currently selected package; in the command-line search, this is the package being displayed.

Escape	Namn	Default size	Expandable	Beskrivning
`%%`	Literal `%`	1	Nej	This is not really an escape; it simply inserts a percent sign into the output at the point at which it occurs.
`%#number`	Parameter Replacement	Variabel	Nej	In some circumstances, a display format string will have “parameters”: for instance, in the command-line `search`, the groups matched by the search are used as parameters when displaying the result. This format code will be replaced by the parameter indicated by `number`.
`%a`	Åtgärdsflagga	1	Nej	A single-character flag summarizing any action to be performed on the package, as described in Figur 2.10, “Värden för flaggan “action””.
`%A`	Åtgärd	10	Nej	A somewhat more verbose description of the action to be performed on the package.
`%B`	Broken Count	12	Nej	If there are no broken packages, produces nothing. Otherwise, produces a string such as “`Broken: 10`” describing the number of broken packages.
`%c`	Current State Flag	1	Nej	A single-character flag summarizing the current state of the package, as described in Figur 2.9, “Värden för flaggan “current state””.
`%C`	Current State	11	Nej	A more verbose description of the current state of the package.
`%d`	Beskrivning	40	Ja	Paketets korta beskrivning.
`%D`	Paketstorlek	6	Nej	The size of the package file containing the package.
`%H`	Värdnamn	15	Nej	The name of the computer on which aptitude is running.
`%i`	Pin priority	4	Nej	Displays the highest priority assigned to a package version; for packages, displays the priority of the version which will be forced to be installed (if any).
`%I`	Installed Size	6	Nej	The (estimated) amount of space the package takes up on disk.
`%m`	Underhållare	30	Ja	The maintainer of the package.
`%M`	Automatisk flagga	1	Nej	If the package is automatically installed, outputs “`A`”; otherwise, outputs nothing.
`%n`	Programversion	The length of “0.4.2”.	Nej	Outputs the version of the program, currently “`0.4.2`”.
`%N`	Programnamn	The length of the program name.	Nej	Outputs the program name; usually “`aptitude`”.
`%o`	Hämtningsstorlek	15	Nej	If no packages are going to be installed, outputs nothing. Otherwise, outputs a string describing the total size of all the package files which will be installed (an estimate of how much needs to be downloaded); for instance, “`DL size: 1000B`”.
`%p`	Paketnamn	30	Ja	Outputs the name of the package. When a package is displayed in a tree context, the name of the package will be indented, if possible, according to its depth in the tree.
`%P`	Prioritet	9	Nej	Outputs the priority of the package.
`%r`	Reverse Depends Count	2	Nej	Outputs the approximate number of installed packages which depend upon the package.
`%R`	Abbreviated Priority	3	Nej	Outputs an abbreviated description of the package's priority: for instance, “`Important`” becomes “`Imp`”.
`%s`	Sektion	10	Nej	Outputs the section of the package.
`%S`	Trust Status	1	Nej	If the package is untrusted, displays the letter "U".
`%t`	Arkiv	10	Ja	The archive in which the package is found.
`%T`	Taggad	1	Nej	Outputs “`*`” if the package is tagged, nothing otherwise.^[14]
`%u`	Disk Usage Change	30	Nej	If the scheduled actions will alter the amount of space used on the disk, outputs a description of the change in disk space; for instance, “`Will use 100M of disk space.`”
`%v`	Aktuell version	10	Nej	Outputs the currently installed version of the package, or `<none>` if the package is not currently installed.
`%V`	Candidate Version	10	Nej	Outputs the version of the package which would be installed if Paket → Installera (+) were issued on the package, or `<none>` if the package is not currently installed.
`%Z`	Size Change	7	Nej	Outputs how much additional space will be used or how much space will be freed by installing, upgrading, or removing a package.

Anpassa pakethierarkin

The package hierarchy is generated by a grouping policy: rules describing how the hierarchy should be built. The grouping policy describes a “pipeline” of rules; each rule can discard packages, create sub-hierarchies in which packages reside, or otherwise manipulate the tree. The configuration items Aptitude::UI::Default-Grouping and Aptitude::UI::Default-Preview-Grouping set the grouping policies for newly created package lists and preview screens, respectively. You can set the grouping policy for the current package list by pressing G.

The grouping policy is described by a comma-separated list of rules: rule1,rule2,.... Each rule consists of the name of the rule, possibly followed by arguments: for instance, versions or section(subdir). Whether arguments are required and how many arguments are required (or allowed) depends on the type of rule.

Rules can be non-terminal or terminal. A non-terminal rule will process a package by generating some part of the hierarchy, then passing the package on to a later rule. A terminal rule, on the other hand, will also generate part of the tree (typically items corresponding to the package), but does not pass its package to a later rule. If no terminal rule is specified, aptitude will use the default rule, which is to create the standard “package items”.

action

Groups packages according to the action scheduled on them; packages that are not upgradable and will be unchanged are ignored. This is the grouping that is used in preview trees.

deps

This is a terminal rule.

Creates standard package items which can be expanded to reveal the dependencies of the package.

filter(pattern)

Include only packages for which at least one version matches pattern.

If pattern is “missing”, no packages are discarded. This is a backwards compatibility feature and may be removed in the future.

firstchar

Groups packages based on the first character of their name.

hier

Groups packages according to an extra data file describing a “hierarchy” of packages.

pattern(pattern [=> title][, ...])

A customizable grouping policy. Each version of every package is matched against the given patterns. The first match found is used to assign a title to the package; packages are then grouped by their title. Strings of the form \N that occur in title will be replaced by the Nth result of the match. If title is not present, it is assumed to be \1.

For instance, pattern(~m => \1) will group packages according to their Maintainer field. The policy pattern(~m) will do the same thing, as the absent title defaults to \1.

See the section “Sökmönster” for more information on the format of pattern.

priority

Groups packages according to their priority.

section[(mode[,passthrough])]

Groups packages according to their Section field.

mode can be one of the following:

none: Group based on the whole Section field, so categories like “non-free/games” will be created.
topdir: Group based on the part of the Section field before the “/”; if there is no /, main will be used instead.
subdir: Group based on the part of the Section field after the “/”; if there is no /, the entire field will be used.

If passthrough is present, packages which for some reason lack a true Section (for instance, virtual packages) will be passed directly to the next level of grouping without first being placed in sub-categories.

status

Grupperar paket i följande kategorier:

Installerad
Inte installerad
Säkerhetsuppdateringar
Uppgraderingsbar
Föråldrad
Virtuell

tag[(facet)]

Groups packages according to the Tag information stored in the Debian package files. If facet is provided, then only tags corresponding to that facet will be displayed, and packages lacking this facet will be hidden; otherwise, all packages will be displayed at least once (with tagless packages listed separately from packages that have tags).

For more information on debtags, see http://debtags.alioth.debian.org.

task

Creates a tree called “Tasks” which contains the available tasks (information on tasks is read from debian-tasks.desc in the package tasksel). The rule following task will create its categories as siblings of Tasks.

versions

This is a terminal rule.

Creates standard package items which can be expanded to reveal the versions of the package.

Anpassa hur paket sorteras

By default, packages in the package list are sorted by name. However, it is often useful to sort them according to different criteria (for instance, package size), and aptitude allows you to do just that by modifying the sorting policy.

Like the grouping policy described in the previous section, the sorting policy is a comma-separated list. Each item in the list is the name of a sorting rule; if packages are “equal” according to the first rule, the second rule is used to sort them, and so on. Placing a tilde character (~) in front of a rule reverses the usual meaning of that rule. For instance, priority,~name will sort packages by priority, but packages with the same priority will be placed in reverse order according to name.

To change the sorting policy for an active package list, press S.

Tillgängliga regler är:

installsize: Sorts packages by the estimated amount of size they require when installed.
name: Sorterar paket efter namn.
priority: Sorterar paket efter prioritet.
version: Sorts packages according to their version number.

^[14]Currently tagging is not supported; this escape is for future use.