regex - Regular expression syntax advice needed -


Can someone please advise me what I am doing wrong here: 

  Sed /&.*?;ss// '  
 I am trying to remove all but' this text ' 
  lt ; Td rowspan = "2" width = "80" valign = "top" & amp; G; & Amp; #xD; & Amp; Lt; Img src = "http://foo.bar/image.jpeg" / & amp; Gt; & Amp; #xD; & Amp; Lt; / TD & amp; Gt; & Amp; #xD; & Amp; Lt; TD & amp; Gt; & Amp; #xD; This text & amp; #xD; & Amp; #xD;  
 
 If your search string is static, then you just have a simple  Grep < / Code>:  
  grep -o "this text" file.txt   
 Otherwise, you can use  sed  And match some patterns, try:  
  sed -e's / & amp; * $ $ '' -e '/ ^ $ / d' -e '/ ^ lt; Td / d 'file.txt   
 You may need to include several other expressions such as:  -e' / ^ lt; Your data file to remove other undesirable lines in td / d ', if included in it.  
 HH

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