### In a bash script while reading a file...
while read line
 do

    # Matches the BOLD, UNDERLINE, and OFF Character Sequences --> (i.e. "^[[1m", "^[[4m", "^[[0m")
    echo "$line" | sed -r 's/\^\[\[(0|1|4)m//g'

    # This REGEX also works... It uses a range instead of "0|1|4"
    echo "$line" | sed -r 's/\^\[\[([0-9])m//g'

done < $myFile

        # Basically the same thing as the one above except the range is NOT enclosed in parenthesis...
        echo "$line" | sed 's/\^\[\[[0-9]m//g'