Notepad++ regular expression replacement string

Be careful ：Notepad++ The maximum length of regular expression string cannot exceed 69 Characters

 expression   explain  
/t  tabs . 
/n  New line . 
.  Match any character . 
|  Match the characters to the left and right of the expression .  for example , "ab|bc"  matching  "ab"  perhaps  "bc". 
[]  Match any single character in the list .  for example , "[ab]"  matching  "a"  perhaps  "b". "[0-9]"  Match any number . 
[^]  Match any single character outside the list .  for example , "[^ab]"  matching  "a"  and  "b"  Characters other than . "[^0-9]"  Match any non numeric character . 
*  The character on the left is matched any number of times (0 Time , Or many times ).  for example  "be*"  matching  "b", "be"  perhaps  "bee". 
+  The character to the left of it is matched at least once (1 Time , Or many times ).  for example  "be+"  matching  "be"  perhaps  "bee"  But it doesn't match  "b". 
?  The character on the left is matched 0 Time or 1 Time .  for example  "be?"  matching  "b"  perhaps  "be"  But it doesn't match  "bee". 
^  The expression on the right is matched at the beginning of a line .  for example  "^A"  Just match to  "A"  Beginning line . 
$  The expression on the left is matched at the end of a line .  for example  "e$"  Just match to  "e"  The line at the end . 
()  Affects the order in which expressions match , And used as a grouping marker for expressions . 
/  Escape character .  If you want to use it  "/"  In itself ,  Should be used  "//". 

contain “hello word” The line of

^.hello word.$

With “hello word” The first line

^hello word.*$

With “hello word” The line at the end

.*hello word$

Search result processing

Line 8: </item><item>    <word>social media</word>
	Line 15: </item><item>    <word>constant</word>
	Line 24: </item><item>    <word>row</word>
	Line 33: </item><item>    <word>approach</word>
	Line 41: </item><item>    <word>exam</word>
	Line 48: </item><item>    <word>alarm</word>
	Line 56: </item><item>    <word>obviously</word>
	Line 63: </item><item>    <word>urgently</word>

Remove the front Line

^.*Line.*: