PREE HW#6 - 1/usr/local/bin/perl-w#This program prints...

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1. #!/usr/local/bin/perl -w #This program prints lines that contain only three characters. while(<STDIN>) { if(m/^.{3}$/) { print($_); } } #End 2. #!/usr/local/bin/perl -w #This program prints only lines with at least three characters. while(<STDIN>) { if(m/^.{3,}$/) { print($_); } } #End 3. #!/usr/local/bin/perl -w #This program prints non-blank lines while(<STDIN>) { unless(m/^$/) { print($_); } } #End 4. #!/usr/local/bin/perl -w #This program prints number of non-blank lines. while(<STDIN>) { unless(m/^$/)
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{ $counter++; } } print("\n$counter\n"); #End 5. #!/usr/local/bin/perl -w #This program prints lines that starts with a digit. while(<>) { if(m/^\d/) { print ; } } #End 6. #!/usr/local/bin/perl -w #This program prints lines that starts and ends with the same char. while(<STDIN>) { if(m/^(.).*\1$/) { print($_); } } #End 7. #!/usr/local/bin/perl -w #This program prints the line in which two consecutive words are the same. while(<STDIN>) { if(m/\b(\w+)\s+\1/i) { print("Duplicate word '$1' at line $..\n"); } } #End 8.
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#!/usr/local/bin/perl -w #This program prints the part of each line after the ";" or ":". while(<STDIN>) { m/[;:]/; print($'); } #End 9.
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