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Top Forums UNIX for Dummies Questions & Answers List the directories, having given pattern in the directories name, sorted by creation date Post 302802803 by Don Cragun on Sunday 5th of May 2013 12:21:31 AM
Old 05-05-2013
Most UNIX Systems do not keep track of the creation date of a file (only the last access time, the last (data) modification time, and the last status modification time timestamps are specified by the standards). Sorting by ls (with the -t option and without the -S, -c, and -m options) sorts by increasing data modification time. But, as I'm sure you've noticed from the output in your examples, anything with a date in the future and anything with a date more than six months old will print the month, day, and year of the date while dates within the last six months will be printed with the month, day, and time of day (in 24 hour format).

So the command:
Code:
ls -ldt pkg3[23]* | grep '^d'

will give you the list of directories in the current directory matching the patterns you want sorted by increasing timestamp and the command:
Code:
ls -lrdt pkg3[23]* | grep '^d'

will give you the same list sorted in reverse order.

But, neither of these will print the date in MM/DD/YYYY format.

Does HP/UX B.11.31 include a stat utility?

Do you just want directories located in the current directory, or do you also want to process subdirectories with matching names?

Do any of your directory names contain one or more space or tab characters? Do any of your directory names contain one or more newline characters? If the answer to both of these is no, there are several simplifying assumptions we can make.

Is MM/DD/YYYY format a requirement or a nice-to-have feature? If it is a requirement and your system doesn't have a stat utility, would you rather have a complicated shell script or a relatively simple C program?
 

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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)
All times are GMT -4. The time now is 01:10 AM.
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