[Gllug] Arithmetic error in bash on 08 and 09?

[Holger Duerer]

>>>>> "Wulf" == Wulf Forrester-Barker <wulf.f-b at uhl.nhs.uk> writes:
  [...]

    Wulf> Out of interest, is there a neater way this could be done in
    Wulf> a bash script?

Hmmm.  What if you just remove the leading 0 before doing the
arithmetic?

Something along the lines of (more general than necessary):

,----
| # Get the number
| num=$(date +%U)
| 
| # Remove leading 0s (but not the last one remaining)
| while [ $(expr $num : '0[0-9]') != 0 ]; do 
|   num=$(expr substr $num 2 1000)
| done
| 
| # Increment
| num=$(expr $num + 1)
| 
| # Make it a file name:
| Xfile=$(printf XXX%02d.log $num)
`----

Wrap it in a function and your code will still be tidy...

        Holger
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