About
linux32 is a command that set a 32 bit address mode emulation.
linux32 changes the personality of command and all its children to return i686 instead of x86_64 in uname. linux64 resets the uname personality to default.
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Syntax
linux32 [ --3gb ] [ --4gb ] command arguments...
linux64 command arguments...
Example
$ linux32 bash
$ uname -p
i686
$ linux64 bash
$ uname -p
x86_64
with: