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Old 04-07-2011, 05:35 PM   #1
quartaela
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Registered: Apr 2011
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deleting a specific line which contains 2 patterns


hi there i have a problem about deleting a line from a text file which contains two specific patterns. i am using
"sed -i "/$name/ d" peop.txt" but i must use one more variable which is surname.

"
burak:ak:3242:2342:dsa@a.com
gokhan:an:432:4234:da@a.com
"

and this is the code of text file.
and the second question when i use "/$name/ d" it deletes not only the names which are macthing with $name but also all words that contain $name. so how can i fix these problems_?. and thx for your help : )
 
Old 04-07-2011, 08:37 PM   #2
grail
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Well the answer to question 1 would be that as you have not told us what is in $name currently and which field in your file relates to names, I would not be able
to tell you how to add surname.

As to questions 2, of course sed looks for all matches to what you have said is a $name. Should you want to match tim but not timothy you need to give sed more information
on where your word stops, ie if it delimited by the start of the line and a colon after it you can use:
Code:
name=tim

sed -i "/^$name:/d" peop.txt
 
Old 04-07-2011, 09:05 PM   #3
Nermal
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Quote:
Originally Posted by quartaela View Post
Code:
burak:ak:3242:2342:dsa@a.com
gokhan:an:432:4234:da@a.com
If the row definition is:
name
surname
another_field
yet_another_field
email_address

then you could:
[code]
name=gokhan
surname=an

sed -i "/^$name:$surname/d" peop.txt

[code]

you could mix this up with other "regex" and match on the e-mail in the last field as well:

Code:
name=gokhan
surname=an
email_address=da@a.com

sed -i "/^$name:$surname:.*:.*:$email_address/d" peop.txt
Search from regex at you favourite search engine.
 
  


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