/usr/share/libfm/ui/preferred-apps.ui is in libfm-gtk-data 1.2.5-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | <?xml version="1.0"?><interface><requires lib="gtk+" version="2.18"/>
<object class="GtkDialog" id="dlg"><property name="border_width">5</property><property name="title" translatable="yes">Preferred Applications</property><property name="window_position">center</property><property name="type_hint">normal</property><child internal-child="vbox"><object class="GtkVBox" id="dialog-vbox1"><property name="visible">True</property><property name="orientation">vertical</property><property name="spacing">2</property><child><object class="GtkNotebook" id="notebook1"><property name="visible">True</property><property name="can_focus">True</property><child><object class="GtkVBox" id="vbox1"><property name="visible">True</property><property name="border_width">12</property><property name="orientation">vertical</property><property name="spacing">18</property><child><object class="GtkVBox" id="vbox2"><property name="visible">True</property><property name="orientation">vertical</property><property name="spacing">6</property><child><object class="GtkLabel" id="label3"><property name="visible">True</property><property name="xalign">0</property><property name="label" translatable="yes"><b>Web Browser</b></property><property name="use_markup">True</property></object><packing><property name="expand">False</property><property name="position">0</property></packing></child><child><object class="GtkAlignment" id="alignment1"><property name="visible">True</property><property name="left_padding">12</property><child><object class="GtkVBox" id="vbox5"><property name="visible">True</property><property name="orientation">vertical</property><property name="spacing">6</property><child><object class="GtkLabel" id="label4"><property name="width_request">360</property><property name="visible">True</property><property name="xalign">0</property><property name="label" translatable="yes">The preferred Web Browser will be used to open hyperlinks.</property><property name="wrap">True</property></object><packing><property name="position">0</property></packing></child><child><object class="GtkComboBox" id="browser"><property name="visible">True</property></object><packing><property name="position">1</property></packing></child></object></child></object><packing><property name="expand">False</property><property name="position">1</property></packing></child></object><packing><property name="expand">False</property><property name="position">0</property></packing></child><child><object class="GtkVBox" id="vbox3"><property name="visible">True</property><property name="orientation">vertical</property><property name="spacing">6</property><child><object class="GtkLabel" id="label5"><property name="visible">True</property><property name="xalign">0</property><property name="label" translatable="yes"><b>Mail Client</b></property><property name="use_markup">True</property></object><packing><property name="expand">False</property><property name="position">0</property></packing></child><child><object class="GtkAlignment" id="alignment2"><property name="visible">True</property><property name="left_padding">12</property><child><object class="GtkVBox" id="vbox6"><property name="visible">True</property><property name="orientation">vertical</property><property name="spacing">6</property><child><object class="GtkLabel" id="label6"><property name="width_request">360</property><property name="visible">True</property><property name="xalign">0</property><property name="label" translatable="yes">The preferred Mail Client will be used to compose emails when you click on e-mail addresses.</property><property name="wrap">True</property><property name="width_chars">60</property></object><packing><property name="position">0</property></packing></child><child><object class="GtkComboBox" id="mail_client"><property name="visible">True</property></object><packing><property name="position">1</property></packing></child></object></child></object><packing><property name="expand">False</property><property name="position">1</property></packing></child></object><packing><property name="expand">False</property><property name="position">1</property></packing></child><child><object class="GtkVBox" id="vbox4"><property name="orientation">vertical</property><property name="spacing">6</property><child><object class="GtkLabel" id="label7"><property name="visible">True</property><property name="xalign">0</property><property name="label" translatable="yes"><b>Terminal Emulator</b></property><property name="use_markup">True</property></object><packing><property name="expand">False</property><property name="position">0</property></packing></child><child><object class="GtkAlignment" id="alignment3"><property name="visible">True</property><property name="left_padding">12</property><child><object class="GtkHBox" id="hbox4"><property name="visible">True</property><property name="spacing">6</property><child><object class="GtkLabel" id="label8"><property name="visible">True</property><property name="label" translatable="yes">Command line:</property></object><packing><property name="expand">False</property><property name="position">0</property></packing></child><child><object class="GtkEntry" id="terminal"><property name="visible">True</property><property name="can_focus">True</property><property name="invisible_char">•</property></object><packing><property name="position">1</property></packing></child></object></child></object><packing><property name="expand">False</property><property name="position">1</property></packing></child></object><packing><property name="expand">False</property><property name="position">2</property></packing></child></object></child><child type="tab"><object class="GtkLabel" id="label1"><property name="visible">True</property><property name="label" translatable="yes">System Applications</property></object><packing><property name="tab_fill">False</property></packing></child><child><object class="GtkVBox" id="vbox8"><property name="orientation">vertical</property><child><placeholder/></child></object><packing><property name="position">1</property></packing></child><child type="tab"><object class="GtkLabel" id="label2"><property name="visible">True</property><property name="label" translatable="yes">File Associations</property></object><packing><property name="position">1</property><property name="tab_fill">False</property></packing></child></object><packing><property name="position">1</property></packing></child><child internal-child="action_area"><object class="GtkHButtonBox" id="dialog-action_area1"><property name="visible">True</property><property name="layout_style">end</property><child><object class="GtkButton" id="cancel"><property name="label">gtk-cancel</property><property name="visible">True</property><property name="can_focus">True</property><property name="receives_default">True</property><property name="use_stock">True</property></object><packing><property name="expand">False</property><property name="fill">False</property><property name="position">0</property></packing></child><child><object class="GtkButton" id="ok"><property name="label">gtk-ok</property><property name="visible">True</property><property name="can_focus">True</property><property name="receives_default">True</property><property name="use_stock">True</property></object><packing><property name="expand">False</property><property name="fill">False</property><property name="position">1</property></packing></child></object><packing><property name="expand">False</property><property name="pack_type">end</property><property name="position">0</property></packing></child></object></child><action-widgets><action-widget response="-6">cancel</action-widget><action-widget response="-5">ok</action-widget></action-widgets></object></interface>
|