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sed replace characters in next line with input from a file

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# 1  
Old 07-08-2011
sed replace characters in next line with input from a file
Hi,
I have a set of strings in filea.
I want to search string xyz in fileb and replace next line in file b with the content from filea.

Code:
#cat filea
abc
def
ghi
 
#cat fileb
asdkjdslka
sajljskdjoi
xyzjjjjkko
aaaaaaaa
bbbbbbbb
cccccccc
xyzsdsajd
dddddddd
eeeeeeee
fffffffffsjk
xyzsdaioll
iiiiiiiiiiiijjjjjjj
kkkkkkkkk
mmmmmm
 
Expected fileb after operation:
asdkjdslka
sajljskdjoi
xyzjjjjkko
aaaaaaaa
bbbbbabc
cccccccc
xyzsdsajd
dddddddd
eeeeedef
fffffffffsjk
xyzsdaioll
iiiiiiiiiiiijjjjjjj
kkkkkkghi
mmmmmm

# 2  
Old 07-08-2011
Hi,

Test next 'perl' script:
Code:
$ cat script.pl
use warnings;
use strict;

my $filea_name = $ARGV[0] || "";
my @filea;
my $modline = 0;
while ( <> ) {
        chomp;
        do { push @filea, $_; next } if $filea_name eq $ARGV;

        ## Here only lines of 'fileb' file

        if ( index( $_, "xyz" ) > -1 ) {
                $modline = $. + 2;
        }

        if ( $modline == $. ) {
                s/(?:\S{3})(\s*)$/shift( @filea ) . $1/e;
                $modline = 0;
        }

        printf "%s\n", $_;
}
$ perl script.pl filea fileb
asdkjdslka
sajljskdjoi
xyzjjjjkko
aaaaaaaa
bbbbbabc
cccccccc
xyzsdsajd
dddddddd
eeeeedef
fffffffffsjk
xyzsdaioll
iiiiiiiiiiiijjjjjjj
kkkkkkghi
mmmmmm

Regards,
Birei
This User Gave Thanks to birei For This Post:
anilvk
# 3  
Old 07-08-2011
awesome! Smilie
Thanks Birei
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