Getting Yesterdays or Tomorrows day with shell date command

Thank you for this info!

There seems to be a small typo on first example:

date –date=”1 days ago”

should be

date -–date=”1 days ago”

with two “-”s

How do you use the –date= string to start at one point and count ahead? I want to start at 20060108 and display the date of each sunday until July 1, 2007. If I say “–date=’week’” it gives me one week from today. How can I add ‘week’ to a date, such as 20060108?

Given a date, how do I relatively find a day of the week? Example: For the date 20070807, how do I find out the date of the Monday of that week?

Hi,
I want previous date and Next date.
I tried the above commands,byt its giving me the following usage.
bash-3.00$ date –date=”yesterday”
date: illegal option — -
Usage: date [-u] [+format]
date [-u] [mmddhhmm[[cc]yy]]
date [-a [-]sss.fff]

I am using HP-UX machine

Or you can use the following to get tomorrow’s date:

x="`date '+%m'`"
y="`date '+%Y'`"
z="`date '+%d'`"

z="`expr ${z} + 1`"
cal ${x} ${y} | grep -w ${z} > /dev/null || {
        z="01"
        x="`expr ${x} + 1`"
        [ "${x}" -lt "10" ] && x="0${x}"
        [ "${x}" = "13" ] &+ 1`"
        }
}

[ "${1}" = "MMDDYYYY" -o "${1}" = "mmddyyyy" -o -z "${1}" ] &${z}${y}"
        echo ${tomorrow}
        exit 0
}
[ "${1}" = "DDMMYYYY" -o "${1}" = "ddmmyyyy" ] &${x}${y}"
} || {
        echo "Invalid format! Using the default:"
        tomorrow="${x}${z}${y}"
}
echo ${tomorrow}

I’ve been wanting to work out last day of a month too. I just worked it out:

date -d ‘next month – ‘`date +%d`’day’

Cheers
AndrewM

Hi Sourav.

I don’t think the Solaris “date” command is as extensive as the LINUX date command.

I this informaiton from Solaris 10’s date command when using “date –date”:
$ date –date
date: illegal option — date
usage: date [-u] mmddHHMM[[cc]yy][.SS]
date [-u] [+format]
date -a [-]sss[.fff]
$

I found an article on getting yesterday’s date on Solaris from the shell. The article provides a PERL shell command:
perl -e ‘print scalar(localtime(time – 86400)), “\n”‘

The URL for that article is http://sysunconfig.net/unixtips/prevdate.txt

Hi Jason,

Firstly thanks a ton to find out the source of my problem.

But just FYI, i tried to give the below commands, and it helped me to get yesterday’s and tomorrow’s date. Hope this helps everyone who faces the same issue as me.

$ TZ=$TZ+24 date “+%D”……….for yesterday’s date
$ TZ=$TZ-24 date “+%D”………..for tomorrow’s date

Thanks again…

Thanks so much, this has been so helpful.

I wanted output as this format – 2009_12_01, the below worked for yesterday
echo `date –date=”yesterday” ‘+20%y_%m_%d’`