RE: Print the first column of a file

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To: <redhat-list@redhat.com>
Date: Wed, 30 Jul 2003 15:14:11 -0400

Depends on what the lines actually look like, check man/info
pages but you could

Try cut -f1 filename | sort | uniq

you need to sort it first prior to UNIQ.

> -----Original Message-----
> From: redhat-list-admin@redhat.com
> [mailto:redhat-list-admin@redhat.com]On Behalf Of Barry
Johnson
> Sent: Wednesday, July 30, 2003 2:31 PM
> To: redhat-list@redhat.com
> Subject: RE: Print the first column of a file
>
>
> Awk is something that you could you
>
> More $filename|awk '{print $1}'|uniq will sort through
the file and
> print the first column
>
> -----Original Message-----
> From: redhat-list-admin@redhat.com
> [mailto:redhat-list-admin@redhat.com]
> On Behalf Of Mark Neidorff
> Sent: Wednesday, July 30, 2003 9:48 AM
> To: redhat-list@redhat.com
> Subject: Re: Print the first column of a file
>
>
> On Tue, 29 Jul 2003, Reuben D. Budiardja wrote:
>
> >
> > Hello,
> > What command would I use to print just the first column
of
> a file? For
> > example, the httpd (apache) access_log. The first
column
> contains the
> IP
> > address. How can I just output that, so that I can then
pass it to
> "uniq" to
> > get the uniques IP addresses that requested a page from
my server?
> > Like:
> >
> > $> <command> | uniq
> >
> > Does this use something like 'sed' or 'gawk'? I need to
> learn how to
> > use those
> > anyways :)
> >
> > Thanks for any help.
> > RDB
> >
>
> Take a look at the 'cut' command.
>
> Mark
>
>
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• Previous message: Joe Polk: "Re: Red Hat 10"
• Maybe in reply to: Reuben D. Budiardja: "Print the first column of a file"
• Next in thread: Bret Hughes: "RE: Print the first column of a file"
• Reply: Bret Hughes: "RE: Print the first column of a file"
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