grep адресов из списка

cat urls.html | grep -Eo "(http|https)://[a-zA-Z0-9./?=_%:-]*" | sort -u


• grep -E : is the same as egrep
• grep -o : only outputs what has been grepped
• (http|https) : is an either / or
• a-z : is all lower case
• A-Z : is all upper case
• . : is dot
• / : is the slash
• ? : is ?
• = : is equal sign
• _ : is underscore
• % : is percentage sign
• : : is colon
• - : is dash
• *: is repeat the […] group
• sort -u : will sort & remove any duplicates

grep -Eo “(http|https)://[a-zA-Z0-9./?=_%:-]*\.(png|gif|jpg|jpeg)”

греп всех картинок