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MARCH - Multi Arch Wrapper Script

Utility program for the execution of machine-optimised alternatives. The general system setting is done via kernel command line: march={v2,v3,v4} If the parent directory of some program exists with a -march suffix and contains an executable with the same name, run that instead of program.

Example

Existing layout

/usr/bin/prog       # standard program
/usr/bin-v3/prog    # optimised version of program

# executing prog via march

march -mv3 prog

# result in execution of /usr/bin-v3/prog

Notes

The same holds true, if you insert /usr/bin-v3 before /usr/bin in $PATH of course, but march does not require any $PATH modification and will work with executables in non-standard paths as well.

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