Shell Programming and Scripting

#!/bin/sh
for id in `cut -d' ' -f2 $1 |sort -u`
do
      echo 'ID='$id
      grep $id $1 |awk '{print $1 " "  $5}'
done

 grep $id $1 |awk '{print $1 " "  $5}'

grep $id $1 |sed 's/ .*|//'

while(<DATA>){
	chomp;
	next if $. == 1;
  my @tmp=split("[ |]",$_);
  push @{$hash{$tmp[1]}}, $tmp[0]." ".$tmp[5];
}
foreach my $key(keys %hash){
	print "ID = $key\n";
	print join "\n", @{$hash{$key}};
	print "\n";
}
__DATA__
DATE ID LOG_LEVEL | EVENT
2009-07-23T14:05:11Z T-4030097550 D | MessX
2009-07-23T14:10:44Z T-4030097550 D | MessY
2009-07-23T14:34:08Z T-7298651656 D | MessX
2009-07-23T14:41:00Z T-7298651656 D | MessY
2009-07-23T15:05:10Z T-4030097550 D | MessZ

#!/bin/sh
lookfor='(MessX|MessY|MessZ|this|that|blabla)'
for id in `cut -d' ' -f2 $1 |sort -u` ; do
      echo 'ID='$id
      grep $id $1 | grep $lookfor |awk '{print $1 " "  $5}'
done