Slug filenames in directory

slugifile.sh

#!/bin/bash

if [ "$#" -eq 0 ]; then
    echo "Usage: $0 FILENAME | 'WILDCARD' (in single quotes)"
    exit
fi

slug() {
    # Replace non-alpha characters and rename file
    f=$(basename "$1")
    s=$(echo "$f" | awk '{ gsub(/[^0-9a-zA-Z_\-\. ]/, ""); gsub(/[ ]+/, "-"); gsub(/--+/, "-"); print; }')
    if [ "$f" != "$s" ]; then
        mv -v "$f" "$s"
    fi
}

# Slug all filenames in current directory, this `find` invocation safe for paths with newline characters
find . -type f -depth 1 -name "$1" -print0 | while IFS= read -r -d '' fn; do slug "$fn"; done

# vim: set filetype=sh :

This may be a better use for find, but this works too.