>perl -wMstrict -le
"my $line2 = 'I:\$AVG\hello.log';
 printf qq{'$_'  } for split /\b/, $line2;
 print qq{\n};
 printf qq{'$_'  } for split /\B/, $line2;
"
'I'  ':\$'  'AVG'  '\'  'hello'  '.'  'log'

'I:'  '\'  '$A'  'V'  'G\h'  'e'  'l'  'l'  'o.l'  'o'  'g'