Trapping all exits from perl may indeed make your code too complex.

I like pc88mxer's idea above of controlling your test environment with a VM or chroot solution. This way you can "mock" the expected, root owned external commands as you see fit w/o touching your perl code.

In reply to Re^3: mocking or trapping system calls by Anonymous Monk
in thread mocking or trapping system calls by wu-lee

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