That code does work ... Perhaps you just missed the timestamp because there's no endline? 
[me@host me]$ cat C:\\temp\\testtmp.tmp
ABCD_060824010101.DAT
EFGH_060824010101.DAT
HIJK_060824010101.DAT
060824010101[me@host me]$

[download]
in the spirit of TMTOWTDI: 
   my $valuFileName="ABCD_060824010101.DAT";
   my $distFileName="EFGH_060824010101.DAT";
   my $tranFileName="HIJK_060824010101.DAT";
   my $tmp_file="/tmp/testtmp.tmp";
   my ($busnDate) = $valuFileName =~ /_(\d{12})/;
   open(TMP_FILE, ">", $tmp_file) or die "failed to write '$tmp_file':
+ $!\n";
   print TMP_FILE join("\n", $valuFileName, $distFileName, $tranFileNa
+me, $busnDate);
   close TMP_FILE;

[download]

In reply to Re: Writing to a File by davidrw
in thread Writing to a File by mantra2006

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