This file is indexed.

/usr/bin/update-nfonts is in mknfonts.tool 0.5-11build2.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/bin/sh

input=/usr/share/fonts/
output=/usr/lib/GNUstep/System/Library/Fonts/
# if non root user ~/GNUstep/Library/Fonts/
if [ "`id`" != "`id root`" ]; then
    mkdir -p ~/GNUstep/Library/Fonts/
    output=`echo ~/GNUstep/Library/Fonts/`
fi

for z in ttf pfa pfb otf; do
    cd $output
    find $input -name "*.${z}" -type f -print | while read a; do
	if test -f $a; then
	    bna=`basename "$a"`
	    echo "Preparing $bna for nfont"
	    ln -s "$a" "$bna" 2>/dev/null
        fi
    done
done
#symlinks -dv $output
c=0
b=""
printf "Creating nfonts"
for z in ttf pfa pfb otf; do
    for a in $z; do
	b="$b *.${a}"
	c=$((c+1))
	if test $c -eq 15; then
	    mknfonts $b 2>/dev/null
	    printf "."
	    b=""
	    c=0
	fi
    done
    mknfonts $b 2>/dev/null
    echo
done
#cd

exit

#the bottom one is ugly and the top one too (but the top one is faster)
#and we need it until gnustep has the argumentlist limit removed.

#!/bin/sh

input=/usr/share/fonts/
output=/usr/lib/GNUstep/System/Library/Fonts/
mask="*.ttf"

cd $output
find $input -name "$mask" -type f -print |while read a; do
    ln -s "$a" "`basename "$a"`" 2>/dev/null
done
#symlinks -dv $output
for a in $mask; do
    mknfonts "$a"
done
#cd