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UNIX for Dummies Questions & Answers
Need to go back 1 day using the date command
Post 11764 by Cameron on Tuesday 11th of December 2001 11:11:28 PM
12-12-2001
Solved ...
Try the following ... 
## Long Name Month Listing.
lngmth="January February March April May June \
July August September October November December"
## Short Name Month Listing.
shtmth="Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec"
##
## Get Current Month Number (01-12).
xcurmth=`date +%m`
## Get Previous Month Number (01-11).
xprvmth=`expr $xcurmth - 1`
## Get Year Number (??).
xcuryr=`date +%Y`
## Get Previous Year Number (??).
xprvyr=`expr $xcuryr - 1`
xx=`echo $shtmth | cut -f$2 -d" "`
zz=`echo $lngmth | cut -f$2 -d" "`
XX=`echo $shtmth | cut -f$2 -d" "`$xprvyr
ZZ=`echo $lngmth | cut -f$2 -d" "`$xcuryr
If $xprvmth = 0 then you must use $xprvyr and 12 for the month. ...
(eg. `echo $shtmth | cut -f12 -d" "`$xprvyr)
## Long Name Month Listing.
lngmth="January February March April May June \
July August September October November December"
## Short Name Month Listing.
shtmth="Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec"
##
## Get Current Month Number (01-12).
xcurmth=`date +%m`
## Get Previous Month Number (01-11).
xprvmth=`expr $xcurmth - 1`
## Get Year Number (??).
xcuryr=`date +%Y`
## Get Previous Year Number (??).
xprvyr=`expr $xcuryr - 1`
xx=`echo $shtmth | cut -f$2 -d" "`
zz=`echo $lngmth | cut -f$2 -d" "`
XX=`echo $shtmth | cut -f$2 -d" "`$xprvyr
ZZ=`echo $lngmth | cut -f$2 -d" "`$xcuryr
If $xprvmth = 0 then you must use $xprvyr and 12 for the month. ...
(eg. `echo $shtmth | cut -f12 -d" "`$xprvyr)
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