Extract and list every occurrence of string between two delimiters match from text body-CodePudding

I would like to understand how to extract all links (starting with www and ending with .com) from a text body such as below. Multiple occurrences may or may not occur per line.

cat body.txt
text more-text url="http://www.link1.com">textblabla textbla=textblabla url="http://www.link2.com">textblabla textblabla=textblabla textblabla
url="http://www.link3.com"> textblabla textblablabla=bla

Desired output:

www.link1.com
www.link2.com
www.link3.com

CodePudding user response：

Hope this helps:

myStr='text more-text url="http://www.link1.com">textblabla textbla=textblabla url="http://www.link2.com">textblabla textblabla=textblabla textblabla url="http://www.link3.com"> textblabla textblablabla=bla';

for aString in ${myStr[@]}; do
    if [[ ${aString} =~ www.*?com ]]; then
      echo ${BASH_REMATCH[0]}
    fi
done

CodePudding user response：

Using grep

$ grep -o 'www\.[^.]*\.com' input_file
www.link1.com
www.link2.com
www.link3.com