Intro to perl Notes
Invocation
-p -- loop on input, print results
-n -- loop on input, don't print results
-e COMMANDLINE -- process this command line
-w -- warn about errors
Literals
123 4E-2 0xf00 0731
'ab $cd' -- don't interpolate cd
"e $fg h" -- interpolate $fg
`date` -- results of date command
(1,2,3) -- three element array
("K1", 77, "key2", 99) -- two element associative array
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