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Hi MadeInGermany...
Although there is a workaround this is an edge case:
#!/usr/local/bin/dash
# lead_zeros.sh

# This is a gotcha...
# There will always be 6 zeros sooner or later, 000000.
...

Well the C source does not compile on a current update, 19-01-2020, Linux Mint 19 using gcc 7.4.0 so here is a completely simplified and modified version for gcc 4.2.1 and 7.4.0...
The printf ...

As the clock is very quickly cycling inside the microsecond part there is always a possibility of these values '00000' to '09999' occurring. These are obviously NOT octal but decimal with leading...

Hi all...
Apologies for any typos, etc...
This took a while but it didn't beat me...

Although there are many methods of generating random numbers in a POSIX shell this uses integer maths and a...