unix command

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Original Message

Name: Devaraj (by Fidy)
Date: February 10, 2006 at 09:09:32 Pacific
Subject: unix command
OS: sun
CPU/Ram: 1280mb

Comment:

Hi,
How can we get the last month from today
in the format yymm.
for eg..if today is feb 06..the output shud be 0601.
Thanks for your help.

Regards,
Jern

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Response Number 1

Name: nails
Date: February 10, 2006 at 15:57:13 Pacific
Subject: unix command

Reply: (edit)

This is one way. Two things to keep in mind:
1) I designed this for today so I subtracted 2000 to get a 2-digit year. Obviously, it won't work pre-2000.
2) Didn't test it for this month being January, but it should work if you expect December, 2005.
#!/bin/ksh
m=$(date '+%m')
m=$((m-=1))
y=$(date '+%Y')
if [[ m -eq 0 ]]
then # january
m=12
y=$((y-=1))
fi
printf "%02d%02d\n" $((y-2000)) $m

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Response Number 2

Name: Devaraj (by Fidy)
Date: February 10, 2006 at 19:17:31 Pacific
Subject: unix command

Reply: (edit)

Thanks Nails..
Regards,
Jern

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