/usr/share/gnuplot/ is in gnuplot-x11 4.6.4-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gnuplot/gnuplot/
/usr/share/gnuplot/gnuplot.gih
/usr/share/gnuplot/gnuplot/4.6/
/usr/share/gnuplot/gnuplot/4.6/PostScript/
/usr/share/gnuplot/gnuplot/4.6/PostScript/8859-1.ps
/usr/share/gnuplot/gnuplot/4.6/PostScript/8859-15.ps
/usr/share/gnuplot/gnuplot/4.6/PostScript/8859-2.ps
/usr/share/gnuplot/gnuplot/4.6/PostScript/8859-9.ps
/usr/share/gnuplot/gnuplot/4.6/PostScript/aglfn.txt
/usr/share/gnuplot/gnuplot/4.6/PostScript/cp1250.ps
/usr/share/gnuplot/gnuplot/4.6/PostScript/cp1251.ps
/usr/share/gnuplot/gnuplot/4.6/PostScript/cp437.ps
/usr/share/gnuplot/gnuplot/4.6/PostScript/cp850.ps
/usr/share/gnuplot/gnuplot/4.6/PostScript/cp852.ps
/usr/share/gnuplot/gnuplot/4.6/PostScript/koi8r.ps
/usr/share/gnuplot/gnuplot/4.6/PostScript/koi8u.ps
/usr/share/gnuplot/gnuplot/4.6/PostScript/prologue.ps
/usr/share/gnuplot/gnuplot/4.6/PostScript/utf-8.ps
/usr/share/gnuplot/gnuplot/4.6/app-defaults/
/usr/share/gnuplot/gnuplot/4.6/app-defaults/Gnuplot
/usr/share/gnuplot/gnuplot/4.6/colors_default.gp
/usr/share/gnuplot/gnuplot/4.6/colors_mono.gp
/usr/share/gnuplot/gnuplot/4.6/colors_podo.gp
/usr/share/gnuplot/gnuplot/4.6/gnuplotrc
/usr/share/gnuplot/gnuplot/4.6/js/
/usr/share/gnuplot/gnuplot/4.6/js/README
/usr/share/gnuplot/gnuplot/4.6/js/canvasmath.js
/usr/share/gnuplot/gnuplot/4.6/js/canvastext.js
/usr/share/gnuplot/gnuplot/4.6/js/gnuplot_common.js
/usr/share/gnuplot/gnuplot/4.6/js/gnuplot_dashedlines.js
/usr/share/gnuplot/gnuplot/4.6/js/gnuplot_mouse.css
/usr/share/gnuplot/gnuplot/4.6/js/gnuplot_mouse.js
/usr/share/gnuplot/gnuplot/4.6/js/gnuplot_svg.js
/usr/share/gnuplot/gnuplot/4.6/js/grid.png
/usr/share/gnuplot/gnuplot/4.6/js/help.png
/usr/share/gnuplot/gnuplot/4.6/js/nextzoom.png
/usr/share/gnuplot/gnuplot/4.6/js/previouszoom.png
/usr/share/gnuplot/gnuplot/4.6/js/textzoom.png
/usr/share/gnuplot/gnuplot/4.6/lua/
/usr/share/gnuplot/gnuplot/4.6/lua/gnuplot-tikz.lua
/usr/share/gnuplot/pm3d/
/usr/share/gnuplot/pm3d/README
/usr/share/gnuplot/pm3d/colorpts-demo.gp
/usr/share/gnuplot/pm3d/colorpts.awk
/usr/share/gnuplot/pm3d/pm3dCompress.awk
/usr/share/gnuplot/pm3d/pm3dConvertToImage.awk
/usr/share/gnuplot/pm3d/pts.dat