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03-09-2007
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compare 2 files..
Hello..I am trying to find solution for this:
I have 2 files A and B A: 1234 2345 3211 1111 5555 6666 7777 8888 9876 B: 1234 2345 3211 1111 5555 6666 9988 8899 2244 output should be: 9988 8899 2244 becouse that is difference between files. I tryed with diff...also I did something with sdiff and then grep "\>" U know to see just lines that are in certain file... can U help me with better solution..maybe awk?? thanks a lot.. 
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03-09-2007
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Code:
awk '
BEGIN {
while ( getline < "A" ) { arr[$0]=1 }
}
{ if ( arr[$0] ~ /^ *$/ ) print FILENAME":" $0
else delete arr[$0];
}
END {
for( key in arr )
if ( key !~ /^ *$/ && arr[key] == 1) print "A:" key
} ' B
Code:
grep -vf A B grep -vf B A Code:
comm -23 A.sorted B.sorted comm -13 A.sorted B.sorted
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03-09-2007
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Code:
#! /opt/third-party/bin/perl
open(FILE, "<", "a" ) || die "Unable to open file a <$!>\n";
while ( <FILE> ) {
chomp;
$fileHash{$_} = $i++;
}
close(FILE);
open(FILE, "<", "b" ) || die "Unable to open file a <$!>\n";
while( <FILE> ) {
chomp;
if( exists $fileHash{$_} ) {
}
else {
print "$_\n";
}
}
close(FILE);
exit 0
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03-09-2007
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I have made few changes to the awk code.
Code:
awk '
BEGIN {
while ( getline < "A" ) { arr[$0]=1 }
}
{ if ( arr[$0] != 1 ) print FILENAME":" $0
else delete arr[$0];
}
END {
for( key in arr )
if ( arr[key] == 1 ) print "A:" key
} ' B
Code:
while ( getline < "A" ) { arr[$0]=1 }
Code:
{ if ( arr[$0] != 1 ) print FILENAME":" $0
else delete arr[$0];
}
Code:
END {
for( key in arr )
if ( arr[key] == 1 ) print "A:" key
}
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