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Old 01-06-2010, 12:58 PM   #16
devnull10
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If you just want to delete lines in a file containing a particular string, use the following:

Code:
sed '/H3qqea3ur6p/d' < oldfile > newfile
I don't know if you want to check for spaces around the word, start and end of lines etc - if you do you will need to modify the above as all that does is look for the existence of the string H3qqea3ur6p and deletes any lines containing it.
 
Old 01-06-2010, 01:08 PM   #17
jschiwal
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Quote:
Originally Posted by raj000 View Post
Hi,

Thanks a ton for your replies. Actually the 2 files are fairly simple text files. Each file contains email addresses in separate row.

File1 -: (this contains about 2000 mails)

email1@email.com
email2@email2.com
email3@email3.com
email4@email4.com

File2 -: (this contains about 200 mails that should be deleted from file1)

email1@email.com
email2@email2.com


in the above example, i need a sed command that would take inputs from file2, 1 line at a time, delete email1@email.com and email2@email2.com from file1 and output the result to file3.
This may be a better description of what you want to do, if you mean "email addresses" when you say mails and you provided a represented sample of lines from each file.

Since you are using the entire line, you want to be left with a file that contains items in file1 that are unique.

Code:
comm -23 <(sort file1) <(sort file2) >file3
The "comm" program prints 3 columns. Files unique to file1, files unique to file 2 and files common to both. The -23 option suppresses the printing of the second and third column.

The "comm" program is one of the programs supplied by the coreutils package so you should have it.
--
Another way of doing this is using grep with the -f option combined with the -v option. This would remove lines from one file that contains patterns in a second file.

Code:
grep -vf <(sort file2 | uniq) file1 >file3
Sorting file2 isn't necessary here but if there is a lot of repetition `uniq' can eliminate the duplicates to save time.

Last edited by jschiwal; 01-06-2010 at 01:21 PM.
 
Old 01-18-2010, 08:22 AM   #18
survietamine
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Quote:
Originally Posted by cezam View Post
Hi i got the same problem here i want to delete each lines of codes that has H3qqea3ur6p in it which is a virus thats infecting people browsing a site that im hosting.. anyhow the grep -Ev doesn't seem to work for me any suggestions???

i had done 1400 lines of removing code so far lol.. but 700 are still not done.

Yannick.
I cannot see any reason that you cannot delete with grep or sed.
Your pattern H3qqea3ur6p is a simple one.
If you don't need extended regexp or don't know how to use it, you can omit -E switch from grep.

Show us your commands.

Last edited by survietamine; 01-18-2010 at 08:24 AM.
 
Old 09-08-2012, 09:38 AM   #19
faizit1988
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use grep -v -f [file_delemail] [file_email] > [file_final]
 
  


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