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  1. or download this
    c:\test>type echoit.pl
#! perl -sw
...
john 23
jim 34
john 44
  2. or download this
    c:\test>type junk.dat | perl echoit.pl
jim  14
...
ernest 27
john 44
matilda 22
  3. or download this
    Terminating on signal SIGINT(2)
Terminate batch job (Y/N)?
  4. or download this
    perl -c script.pl
perl -d:Trace script.pl
perl -X script.pl
  5. or download this
    script -S=this -T=that