sh -c "/usr/bin/time perl -e '$|=1; print getlogin(), chr(10)'        
+  - prints username
sh -c "/usr/bin/time perl -e '$|=1; print getlogin(), chr(10)' & wait"
+  - prints nothing - that is
sh -c "/usr/bin/time perl -e '$|=1; print \$ENV{USER}, chr(10)' & wait
+" - prints username

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In reply to Re^2: Why "getlogin" not works in this case? by bdimych
in thread Why "getlogin" not works in this case? by bdimych

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