INTERVIEW QUESTIONS PROGRAMMING LANGUAGES PERL DETAILS

Question: what does this mean '$^0'? tell briefly plse..

Answer: $^ - Holds the name of the default heading format for the default file handle. Normally, it is equal to the file handle's name with _TOP appended to it.

$^ - Holds the name of the default heading format for the default file handle. Normally, it is equal to the file handle's name with _TOP appended to it. Source: CoolInterview.com

$ is used for representing scalar variables Source: CoolInterview.com

$^O - Holds the name of the operating system being used.
Running perl on windows & linux differs as perl uses some linux commands which are not available in windows. eg. uptime() cmd is available in linux but not in windows. Source: CoolInterview.com

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