What is PPM in Perl?

Perl Package Manager (PPM) is a Perl energy intended to simplify the duties of

1.locating,
2. installing,
3. upgrading
4.removing

the software packages.

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Perl system function - what it is?

Perl System:

system command invokes shell execution by default inside the brackets (). incorrect meta characters may lead errors in shell execution. However we have methods to byepass the shell execution without errors. using system we can able to pass more than one arguments as list for the execution.

we can perform most command line execution using system command.system perform the commands to execute and it waits for the completion of execution and then it returns the output to perl.


Single Argument System Commands:

it interacts with direct shell execution

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perl piped open - reading data from a system process?

Perl Piped Open:

open function is very useful for reading or writing the data files on the system and apart from this file processing we can use pipe symbol for getting data from a system process or sending the data to a system process can be achieved.   lets try this now,

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