Date - how to get (year -1)

[Fenglin]

Hi

how to get year-1?

YRLESS=`date +%Y-1`
echo $YRLESS
The above does not work.

Regards
Feng Lin

[Dennis Handly]

You would have to write a program. Or in perl subtract a year from now. But you would have to handle leap years, either Feb 29 doesn't exist or you would have to include an extra day, if you want the month and day to match the current year.

[Dennis Handly]

Ah, if you just want to get last year and not a date:
$ YRLESS=$(( $(date +%Y) - 1 ))
Or:
$ (( YRLESS = $(date +%Y) - 1 ))

[Suraj K Sankari]

Hi,
You can do this way, cy=current year, py=previous year

$ cy=date +%Y
$ py=`expr $cy - 1 `
$ echo $py
2009


Suraj

[H.Merijn Brand (procura]

$ date '+%Y-1'|bc
2009

Enjoy, Have FUN! H.Merijn [ could not resist to do it even shorter ]

[Tor-Arne Nostdal]

let YRLESS=`date +%Y`-1
echo $YRLESS

/Tor-Arne

[Fenglin]

Thanks to all.

Regards
Feng Lin

[Dennis Handly]

>Thanks to all.

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