ya exactly
perl
Code:
perl -e '$_=shift; print(/v=(.+)/);' https://youtube.com/watch?v=8tRUckf0WbY
awk
Code:
echo https://youtube.com/watch?v=4bQOSRm9YiQ | awk -F 'v=' '{print $2}'
sed
Code:
echo https://youtube.com/watch?v=sGgOM1UsqtE | sed 's/.*watch?v=\([^&]*\).*/\1/'
echo https://youtube.com/watch?v=sGgOM1UsqtE | grep -o 'watch\?v=[^&"]+' | sed -e 's#^[^=]*=##'
echo https://youtube.com/watch?v=sGgOM1UsqtE | sed -ne 's#^.*watch?v=\([^&"]*\+\).*$#\1#p'
echo https://youtube.com/watch?v=sGgOM1UsqtE | sed '/watch?v=/! d;s/.*v=//;s/\(.\{11\}\).*/\1/'