How to create a unique file path in a shell cross-platform? I have looked around on most of the answers and it seems that no cross-platform/portable solution is simple enough. mktemp seems to be the most solid alternative on platforms where mktemp is availible. When it is not availible /dev/random on this stackoverflow question can also be an alternative. If some kind of time traceability is wanted then what would be the next alternative?
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Mike
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The most simple that is included in the posix standard is to use mktemp. If that is not availible date is the next second option. %s parameter of date may also not be availible on all legacy platforms.
date "+%s-%N"
%s seconds since epoch and %N nano seconds to be dead sure of the uniqueness.
With more context:
TEMPDIR=/tmp/`date "+%s-%N"`
Mike
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