Da-Juan

#!/bin/bash                                                                                               
n=$1
j=0
pages=""
for i in $(seq 1 $(( n / 2))); do
        if [ $((i%2)) -ne 0 ]; then
                if [[ $pages != '' ]]; then
                        pages=$pages','
                fi
                pages=$pages$(( n - j ))','$i

Da-Juan

• List Formats:

youtube-dl --list-formats <URL>

• Download video with english subtitles, and embed them, using best formats available

youtube-dl --no-playlist --format best --sub-lang en --sub-format best --write-sub --embed-subs <URL>

Da-Juan

#!/bin/bash
for i in $(sed -r 's@^http[s]?://([[:alnum:].]+)[/]?$@\1@' $1); do
	echo "=== $i ==="
	echo $i | egrep -q "\b([0-9]{1,3}\.){3}[0-9]{1,3}\b"
	if [ $? -eq 0 ]; then
		echo $i
	else
		host -t A $i | grep address | awk '{print $4}'| sort
	fi
done