integer starting with 0 are considered in octal base by bash (issues for month=08....)

[sdipsl]

In bash we need to specify than numbers starting by 0 are in fact base 10. Mainly concern operation on year, month and day

month=06
i=0
if [ $(( month + i )) -lt 13 ] ; then echo tata; else echo toto; fi

month=08
i=0
if [ $(( month + i )) -lt 13 ] ; then echo tata; else echo toto; fi

[sdipsl]

Partly done in r829. At least to enable unit test and DRYRUN=3 mode.

[sdipsl]

ksh-bash Traduction function can cope with it.