diff --git a/update-repo.sh b/update-repo.sh
new file mode 100755
index 0000000..a4d0ff8
--- /dev/null
+++ b/update-repo.sh
@@ -0,0 +1,174 @@
+#!/bin/sh -e
+
+gpgkey=''
+timestamp="$(LC_ALL=C date -u)"
+cachedir='.cache'
+
+# Cleanup
+if [ "$1" = 'clean' ]; then
+    rm -rf "$cachedir" ChangeLog.txt PACKAGES.TXT MANIFEST.bz2 FILELIST.TXT CHECKSUMS.md5 CHECKSUMS.md5.asc GPG-KEY
+    find . -regex '.*\.t[bglx]z$' | while read -r package; do
+        pkgbase="$(echo "$package" | sed 's?.*/??;s/\.t[bglx]z$//')"
+        rm -f "$(dirname "$package")/$pkgbase.txt"
+        rm -f "$package.asc"
+    done
+
+    exit
+fi
+
+mkdir -p "$cachedir"
+
+# Process all packages
+find . -regex '.*\.t[bglx]z$' | while read -r package; do
+    case "$package" in
+        *.tgz)
+            tool=gzip
+            ;;
+        *.tbz)
+            tool=bzip2
+            ;;
+        *.tlz)
+            tool=lzma
+            ;;
+        *.txz)
+            tool=xz
+            ;;
+    esac
+
+    # See the pkgbase and package_name functions in /sbin/installpkg
+    pkgbase="$(echo "$package" | sed 's?.*/??;s/\.t[bglx]z$//')"
+    pkgdir="$(dirname "$package")"
+    pkgname="$(echo "$pkgbase" | sed 's?-[^-]*-[^-]*-[^-]*$??')"
+
+    pkgtxt="$pkgdir/$pkgbase.txt"
+    pkgmeta="$cachedir/$pkgdir/$pkgbase.meta"
+    pkgmanifest="$cachedir/$pkgdir/$pkgbase.manifest"
+    pkgsize="$cachedir/$pkgdir/$pkgbase.size"
+    pkgusize="$cachedir/$pkgdir/$pkgbase.usize"
+
+    [ -f "$pkgtxt" -a \
+      -f "$pkgmeta" -a \
+      -f "$pkgmanifest" -a \
+      -f "$pkgsize" -a \
+      -f "$pkgusize" ] && continue
+    [ "$gpgkey" -a -f "$package.asc" ] && continue
+
+    echo "Adding $package..."
+    mkdir -p "$cachedir/$pkgdir"
+
+    # Decompress the package
+    tmppkg="$(mktemp)"
+    $tool -cd "$package" > "$tmppkg"
+
+    # Get package size
+    du -k "$package" | cut -f 1 > "$pkgsize"
+    du -k "$tmppkg" | cut -f 1 > "$pkgusize"
+
+    # Generate .txt file (see /usr/bin/slackdtxt)
+    (tar xOf "$tmppkg" install/slack-desc 2> /dev/null || echo "$pkgname:") | egrep -v '^($|#| *\|)' > "$pkgtxt"
+
+    # Create manifest for this package
+    cat > "$pkgmanifest" << EOF
+++========================================
+||
+||   Package:  $package
+||
+++========================================
+$(tar tvvf "$tmppkg")
+
+
+EOF
+
+    # Create metadata for this package
+    # Source for the sed line: https://stackoverflow.com/questions/1444406/how-can-i-delete-duplicate-lines-in-a-file-in-unix#1444433
+    cat > "$pkgmeta" << EOF
+PACKAGE NAME:  $(basename "$package")
+PACKAGE LOCATION:  $pkgdir
+PACKAGE SIZE (compressed):  $(cat "$pkgsize" | xargs) K
+PACKAGE SIZE (uncompressed):  $(cat "$pkgusize" | xargs) K
+PACKAGE DESCRIPTION:
+$(cat "$pkgtxt" | sed -e '$!N; /^\(.*\)\n\1$/!P; D')
+
+EOF
+
+    # Sign the package
+    rm -f "$package.asc"
+    [ "$gpgkey" ] && gpg -bas --use-agent --batch -u "$gpgkey" "$package"
+
+    # Remove decompressed package
+    rm -f "$tmppkg"
+done
+
+# Generate shitty ChangeLog.txt
+echo "$timestamp" > ChangeLog.txt
+
+# Create GPG-KEY
+if [ "$gpgkey" ]; then
+    gpg --list-keys "$gpgkey" > GPG-KEY
+    gpg -a --export "$gpgkey" >> GPG-KEY
+fi
+
+# Generate PACKAGES.TXT
+echo "Generating PACKAGES.TXT..."
+
+cat > PACKAGES.TXT << EOF
+
+PACKAGES.TXT;  $timestamp
+
+This file provides details on the Slackware packages found
+in this directory.
+
+Total size of all packages (compressed):  $(expr \( 0$(find "$cachedir" -type f -name '*.size' | xargs cat | xargs printf ' + %s') \) / 1024 || true) MB
+Total size of all packages (uncompressed):  $(expr \( 0$(find "$cachedir" -type f -name '*.usize' | xargs cat | xargs printf ' + %s') \) / 1024 || true) MB
+
+
+EOF
+
+# https://stackoverflow.com/questions/4255603/sort-files-by-basename#4256095
+find "$cachedir" -type f -name '*.meta' | perl -e 'print sort{($p=$a)=~s!.*/!!;($q=$b)=~s!.*/!!;$p cmp$q}<>' | xargs cat >> PACKAGES.TXT
+
+echo >> PACKAGES.TXT
+
+# Generate MANIFEST.bz2
+echo "Generating MANIFEST.bz2..."
+find "$cachedir" -type f -name '*.manifest' | sort | xargs cat | bzip2 -9 -z > MANIFEST.bz2
+
+# Generate FILELIST.TXT
+echo "Generating FILELIST.TXT..."
+
+cat > FILELIST.TXT << EOF
+$timestamp
+
+Here is the file list for this directory.  If you are using a 
+mirror site and find missing or extra files in the disk 
+subdirectories, please have the archive administrator refresh
+the mirror.
+
+EOF
+find . ! -path "./$cachedir/*" -a ! -name "$cachedir" | sort | xargs fakeroot ls -ld --time-style=long-iso > FILELIST.TXT
+
+# Generate CHECKSUMS.md5
+echo "Generating CHECKSUMS.md5..."
+
+cat > CHECKSUMS.md5 << EOF
+These are the MD5 message digests for the files in this directory.
+If you want to test your files, use 'md5sum' and compare the values to
+the ones listed here.
+
+To test all these files, use this command:
+
+tail +13 CHECKSUMS.md5 | md5sum -c --quiet - | less
+
+'md5sum' can be found in the GNU coreutils package on ftp.gnu.org in
+/pub/gnu, or at any GNU mirror site.
+
+MD5 message digest                Filename
+EOF
+find . -type f -a ! -path "./$cachedir/*" | sort | xargs md5sum >> CHECKSUMS.md5
+
+# Sign CHECKSUMS.md5
+rm -f CHECKSUMS.md5.asc
+[ "$gpgkey" ] && gpg -bas --use-agent --batch -u "$gpgkey" CHECKSUMS.md5
+
+# Remove tmpdir
+rm -rf "$tmpdir"