🚀 go-pugleaf

In article <1993Oct1.181038.2707@bmerh85.bnr.ca>,
Vilok Kusumakar <vilok@bnr.ca> wrote:
|> >Vilok Kusumakar <vilok@bnr.ca> wrote:
|> >>I have a problem for awk experts:
|> >>
|> >>I have two text files file1 and file2.
|> >>
|> >>I want to look for presence of string at $1(1st column) in file1 in 
|> >>file2. And print out all the lines in file1 whose $1 is not present 
|> >>in any line in file2.
|> 
|> Thanks for all the solutions. I did it as follows:
|> 
|> sort file1 > sorted1
|> sort file2 > sorted2
|> awk '{
|>     KEY1=$1; LINE1=$0;
|>     while (KEY2 < KEY1 && getline <"sorted2") KEY2=$1;
|>     if (KEY2 != KEY1) print LINE1;
|>     }' sorted1

Vilok, I know you prefer a solution that reduces the amount you have to
type.  Try the following:

cut -d\  -f1 file2 >keys; grep -v -f keys file1
       ^
       Need to tell cut, that space is your delimiter

The -f option used to be available on egrep, but I checked the man page,
and it seems the three (grep, fgrep, egrep) have been consolidated to one
on our machines (HP-UX 8.0)

cheers,
Drago
-- 
Drago Goricanec, +1 613 763-8957,   Internet:  dragog@bnr.ca
Communications Systems, Software Development (OSI Protocols)
Opinions expressed are not necessarily those of BNR.