unixGlobals os command:IfFail: vs. command:Executing:IfFail:

Xin Wang dram.wang at gmail.com
Tue Oct 11 12:16:08 UTC 2016

Hi all,

When reading code in `objects/core/unix.self`, I can not figure out what's
purpose of `command:Executing:IfFail:`. Could anyone give me a hint?

Xin Wang
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