/usr/share/GNUstep/Libraries/gnustep-base/ is in gnustep-base-common 1.25.1-2ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/GNUstep/Libraries/gnustep-base/Versions/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/English.lproj/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/English.lproj/Localizable.strings
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/Esperanto.lproj/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/Esperanto.lproj/Localizable.strings
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/French.lproj/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/French.lproj/Localizable.strings
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/GSTLS/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/GSTLS/ca-certificates.crt
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/German.lproj/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/German.lproj/Localizable.strings
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/Info-gnustep.plist
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/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/Italian.lproj/Localizable.strings
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/Korean.lproj/
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/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/Languages/
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/Languages/Dutch
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/Languages/English
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/Languages/Esperanto
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/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/Languages/Korean
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/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/NSTimeZones/GNUstep_zones
/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/NSTimeZones/README
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