environment variables

While using mv or rm command I get command line length error (Argument list too long error). How do I find out current running shell command line length limitations? How do I overcomes these limitations while writing UNIX / BSD / Linux shell utilities?

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Q. How do I display shell environment settings under FreeBSD operating systems?

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Q. I’m new to Unix / Linux and I’d like to print current values of $PATH variable. How do I read $PATH from a shell prompt?

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How do I install Apache 2 software under Ubuntu Linux?

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