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Top Forums UNIX for Dummies Questions & Answers Getting date -1 day not using GNU date Post 302512033 by rich@ardz on Friday 8th of April 2011 08:37:45 AM
Old 04-08-2011
Getting date -1 day not using GNU date

It's easy as pie to get the date minus one day on opensolaris:
Code:
date -d "-1 day" +"%Y%m%d"

run this command on our crappy Solaris 10 machines however (which I'm guessing doesn't have GNU date running on it) and you get:
Code:
date: illegal option -- d
date: illegal option -- 1
date: illegal option --
date: illegal option -- d
date: invalid argument -- y
usage:  date [-u] mmddHHMM[[cc]yy][.SS]
        date [-u] [+format]
        date -a [-]sss[.fff]

This is so so annoying. I can't put GNU date on these unix machines, so how can I get the date -1 day?

Cheers

---------- Post updated at 01:37 PM ---------- Previous update was at 01:21 PM ----------

nevermind... this does it...

Code:
DATE_STAMP=`TZ=UTC+24 date +%y%m%d`; echo $DATE_STAMP


Last edited by Yogesh Sawant; 04-09-2011 at 08:02 AM.. Reason: corrected a typo in the subject
 

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DATE(1) 						      General Commands Manual							   DATE(1)

NAME
date - print or set the date and time SYNOPSIS
date [-qsu] [[MMDDYY]hhmm[ss]] [+format] OPTIONS
-q Read the date from stdin -s Set the time (implicit for -q or a date string) -u Print the date as GMT -t Use this number of seconds instead of current time EXAMPLES
date # Print the date and time date 0221921610 # Set date to Feb 21, 1992 at 4:10 p.m. DESCRIPTION
With the -q flag or a numeric argument, date sets the GMT time and date. MMDDYY refers to the month, day, and year; hhmmss refers to the hour, minute and second. Each of the six fields must be exactly two digits, no more and no less. date always display the date and time, with the default format for the system. The -u flag request GMT time instead of local time. A format may be specified with a + followed by a printf-like string with the following options: %% % character %A Name of the day %B Name of the month %D mm/dd/yy %H Decimal hour on 2 digits %I Decimal hour modulo 12 on 2 digits %M Decimal minute on 2 digits %S Decimal seconds on 2 digits %T HH:MM:SS %U Decimal week number, Sunday being first day of week %W Decimal week number, Monday being first day of week %X Same as %T %Y Decimal year on 4 digits %Z Time Zone (if any) %a Abbreviated name of the day %b Abbreviated name of the month %c Appropriate date & time (default format) %d Decimal day of the month on 2 digits %e Same as %d, but a space replaces leading 0 %h Same as %b %j Decimal dey of the year on 3 digits %m Decimal month on 2 digits %n Newline character %p AM or PM %r 12-hour clock time with AM/PM %s Number of seconds since the epoch %t Tab character %w Decimal day of the week (0=Sunday) %x Same as %D %y Decimal year on 2 digits SEE ALSO
time(2), ctime(3), readclock(8). DATE(1)
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