Bash to copy and rename files from first line

files.sh

#!/bin/bash
mkdir -p out
for filename in *.txt; do
   [ -e "$filename" ] || continue
    outfile=out/$(head -n 1 "$filename" | tr -d '\r?\n' | tr '/' ' ').txt
    [ -e "$outfile" ] && outfile=out/$(head -n 1 "$filename" | tr -d '\r?\n' | tr '/' ' ')$(gdate +%s%N).txt
    tail -n +2 "$filename" > "$outfile"
    touch -r "$filename" "$outfile"
done;