Script to check links on .md files

scripts/check-links.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+# Check links on the given .md files. If no files are given, check all
+# the .md files of the project.
+# Usage:
+#     scripts/check_links.sh <base-url> [<list-of-md-files>]
+#
+# If <base-url> is missing, default is 'https://dvc.org'. If the list
+# of files is missing, all the .md files in 'static/' will be checked
+#
+# Examples:
+#     scripts/check_links.sh https://dvc.org static/docs/*/*.md
+#     scripts/check_links.sh http://localhost:3000
+#     scripts/check_links.sh
+
+cd $(dirname $0)
+cd ..
+
+# wget settings
+# the option '--max-redirect=0' disables redirections
+settings="-q --max-redirect=0 --method=HEAD"
+
+BASE_URL=${1:-https://dvc.org}
+BASE_URL=${BASE_URL%/}    # remove a trailing /
+shift
+
+files="$@"
+[[ -z $files ]] && files='static/**/*.md'
+
+shopt -s globstar
+for file in $files; do
+    grep -o ']([^)]*)' $file | sed -e 's/^](//' -e 's/)$//' | \
+        while read link; do
+            case $link in
+                /*)   url="${BASE_URL}${link}" ;;
+                '#'*) continue ;;
+                '')   continue ;;
+                *)    url=$link ;;
+            esac
+            wget $settings "$url" || echo "$file: '$link'"
+        done
+done