What is the output of perl command?

7stud has asked for the wisdom of the Perl Monks concerning the following question:

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Re: What is the output of perl command? by Anonymous Monk on Jun 16, 2012 at 03:53 UTC
Nothing, perl waits for input	[reply]
Re: What is the output of perl command? by flexvault (Monsignor) on Jun 16, 2012 at 09:36 UTC
7stud, I tried this on an AIX machine and a Debian Linux machine: `$ perl \| ls` [download] And in both cases I was surprised that the 'ls' executed and I had output, but Perl indeed did wait for input. I then typed a '{ }' and nothing happened. I had to '^C' to break out. Interesting... "Well done is better than well said." - Benjamin Franklin	[reply] [d/l]
Re^2: What is the output of perl command? by cheekuperl (Monk) on Jun 16, 2012 at 11:01 UTC
`$ perl \| ls` [download] ls does not need input to run. So, it ran and gave the output, perl still waiting for some input. Try `$ perl \| wc -l` [download] and you will see both perl and wc waiting for their respective inputs- perl from the user and wc from the pipe.	[reply] [d/l] [select]
Re^2: What is the output of perl command? by cheekuperl (Monk) on Jun 16, 2012 at 11:25 UTC
but Perl indeed did wait for input. I then typed a '{ }' and nothing happened. I had to '^C' to break out. `$PROMPT> perl <press enter key> $name="vaibhav"; print "\nName is $name\n"; __END__ <press enter key> Name is vaibhav $PROMPT>` [download]	[reply] [d/l]
Re^2: What is the output of perl command? by Anonymous Monk on Jun 17, 2012 at 06:18 UTC
:) $ echo print(666) \| perl -l - \| cat 666 $ [download]	[reply] [d/l]