TWTOWTDI :) 
perl -lne '$s=$_; END{ print "OK" if $s=~/^T/ }' /tmp/foo

[download]
Though you might want exit codes instead, depending on what's calling this 
perl -ne '$s=$_; END{ exit($s=~/^T/ ? 0 : 1) }' /tmp/foo

[download]
Or, using File::Tie: 
perl -MTie::File -e 'tie @f, "Tie::File", shift; exit 1 unless $f[-1] 
+=~ /^T/' /tmp/foo

[download]
Or, using File::ReadBackwards (untested): 
perl -MFile::ReadBackwards -e 'exit 1 unless File::ReadBackwards->new(
+shift)->readline =~ /^T/' /tmp/foo

[download]

In reply to Re: Finding a Letter at Last line by davidrw
in thread Finding a Letter at Last line by mantra2006

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