UNIX for Dummies Questions & Answers

Hi there,

I need to extract the mailid's from the mail.info file, for only the senders who send an email to eg "info@example.com".
To simple grep on the "info@example.com" mailaddress doesn't work because the "from=<$sender>" isn't listed in that grep command.

So I thought to grep on mailid's so I have all the mailid of a given time, then filter the mailid's who are equal to the mailid of the "to=<info@example.com>" section. Then i can filter the $senders emailaddresses. In theory...this should work, but how to translate this in a bash script?

example:

Code:

79A62442AF  testhk03@brab2008.local
79A62442AF  testvw02@brab2008.local
6DF7F442AE  testvw02@brab2008.local
2A222442A4  testvw01@brab2008.local

Above is example filtered mail.info file. In this example mail is send from "testvw02@brab2008.local" to "testhk03@brab2008.local". These have the same ID.
I need $1 and $2 of the MailID's only who have send to "testhk03@brab2008.local".
Thus the line 79A62442AF testvw02@brab2008.local.


Hope someone can help me with this.

Thanks in advanced!

Kind regards,

Roland

---------- Post updated at 09:21 AM ---------- Previous update was at 01:09 AM ----------

Have done scripting today, but still have an issue.

I have a file with only the mailid's and the senders emailaddresses. Mow I want to cat that file and remove only the lines which do not have a double entry in the first column.

Code:

37CE3442AD
37CE3442AD testvw01@brab2008.local
E1D7644209 testvw01@brab2008.local

So remove E1D7644209 testvw01@brab2008.local

Thanks in advanced.

Kind regards,

Roland

Moderator's Comments:

Please use code tags <- click the link!

Hi,

need sample input and sample output..

Cheers,
Ranga

Thanks for your answer, but can you give me an example?
I'm not a scripting guru and I think I need something like awk, but can't get it to work.

Thanks in advanced.

---------- Post updated at 02:02 AM ---------- Previous update was at 12:45 AM ----------

Finally got it by myself!!
So simple and didn't get it to work.

Code:

grep -f file1 file2 | awk '{print $2}'

Thanks