merging two files where countries are repeated Post: 302489061

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Top Forums Shell Programming and Scripting merging two files where countries are repeated Post 302489061 by durden_tyler on Wednesday 19th of January 2011 11:12:51 AM

01-19-2011

Registered User

Quote:

Originally Posted by vakharia Mahesh

... but it is not working , only the 1st instance is shown and not all the COUNTRIES names are mentioned. ... i.e. The output shows as :
OUTPUT FILE
=============
Abc , 1234 , London ,UK
Def , 2456 , Paris , France
Efg , 3456 , Newyork , USA
Fgh , 1324 , Tokyo , Japan
Hjk , 5829 , California ?
Lmn , 7823 , Chicago ?
Klm , 6472 , Munich , Germany
Jkm , 8231 , Frankfurt ?
Acl , 3241 , Hiroshima ?
Jmp , 2385 , Detroit ?
Lqm , 4613 , Kansas ?

That is the 1st instance of country will be displayed or joined and not in subsequent events ??

...

It is not working because your data doesn't match.

Brownie points for you if you could find the mismatch in each case yourself.

Code:

$
$ # display the contents of file2
$
$ cat file2
USA , Newyork
USA , California
USA , Sanfransisco
USA , Detroit
USA , Chicago
USA , Kansas
USA , St.Louise
USA , Florida
UK , London
FRANCE , Paris
FRANCE , Marsellie.
INDIA , NewDelhi
INDIA , Mumbai
INDIA , Calcutta
INDIA , Chennai
INDIA , Bangalore
JAPAN , Tokyo
JAPAN , Nagasaki
JAPAN , Hirosima
CANADA , Ottawa
CANADA , Montreal
CANADA , Vancuvor
ARGENTINA , Buenos Aires
BRAZIL , Brassila
BRAZIL , Sao Paulo
ITALY , Rome
NORVEY , Oslo
SPAIN , Madrid
GERMANY , Frankfurt
GERMANY , Munich,
USSR , Moscow
USSR , Laningrad
USSR , Vladvostok
$
$ # display the contents of file1
$
$ cat file1
Abc : 1234 : London
Def : 2456 : Paris
Efg :1456 : Newyork
Fgh : 1324 : Tokyo
Hjk  : 5829 : California
Lmn : 7823 : Chicao
Klm : 6472 : Munich
Jkm : 8231 : Franfurt
Acl : 3241 : Hiroshima
Jmp : 2385 : Detroit
Lqm : 4613 : Kansas
$
$ # run a Perl one-liner joining city to country
$
$ perl -lne 'if ($ARGV eq "file2"){/^(\w+)\s*,\s*(\w+)$/; $x{$2}=$1} else {/^.*:\s*(\w+)$/; $_="$_ , $x{$1}"; s/:/,/g; print}' file2 file1
Abc , 1234 , London , UK
Def , 2456 , Paris , FRANCE
Efg ,1456 , Newyork , USA
Fgh , 1324 , Tokyo , JAPAN
Hjk  , 5829 , California  ,
Lmn , 7823 , Chicao ,
Klm , 6472 , Munich ,
Jkm , 8231 , Franfurt ,
Acl , 3241 , Hiroshima ,
Jmp , 2385 , Detroit , USA
Lqm , 4613 , Kansas , USA
$
$

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