/usr/share/GNUstep/Libraries/gnustep-base/ is in gnustep-base-common 1.24.0-1ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/GNUstep/Libraries/gnustep-base/Versions/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/English.lproj/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/English.lproj/Localizable.strings
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Esperanto.lproj/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Esperanto.lproj/Localizable.strings
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/French.lproj/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/French.lproj/Localizable.strings
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/German.lproj/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/German.lproj/Localizable.strings
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Info-gnustep.plist
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Italian.lproj/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Italian.lproj/Localizable.strings
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Korean.lproj/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Korean.lproj/Localizable.strings
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/Dutch
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/English
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/Esperanto
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/French
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/German
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/Hungarian
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/Italian
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/Korean
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/Locale.aliases
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/Locale.canonical
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/Locale.encodings
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/Russian
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/Slovak
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/Spanish
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/TraditionalChinese
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Languages/Ukrainian
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/NSTimeZones/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/NSTimeZones/GNUmakefile
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/NSTimeZones/GNUstep_zones
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/NSTimeZones/README
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/NSTimeZones/abbreviations
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/NSTimeZones/abbreviations.plist
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/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/NSTimeZones/create-regions.m
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/NSTimeZones/localtime
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/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/NSTimeZones/regions
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/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/Spanish.lproj/
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/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/TraditionalChinese.lproj/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.24/Resources/TraditionalChinese.lproj/Localizable.strings