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Full Discussion: Date issue
Top Forums UNIX for Beginners Questions & Answers Date issue Post 303039294 by vedanta on Sunday 29th of September 2019 03:49:27 PM
Old 09-29-2019
Date issue

How to compare two input date string?

What I am basically trying to get here is get file names in a directory for a particular date range.
I would like to get the file data growth over a certain period of time.

When below code ran I am getting error - -sh: 20190929: No such file or directory

Any better tuned code would be helpful.
Code:
unset next_date
unset curr_date
next_date=20190101
curr_date=`date +%Y%m%d`
counter=0
while (  $next_date < $curr_date );
do
date_from=$(date -d "$next_date +$counter days" '+%Y%m%d')
echo $date_from
echo ">>>>>"$counter
((counter+=10))
echo $counter
date_to=$(date -d "$next_date +$counter days" '+%Y%m%d')
echo $date_to
#ls -lrt $(find /home/test/ -type f -newermt $date_from \! -newermt $date_to ) ## list files for specific range 
done


Last edited by Yoda; 09-29-2019 at 09:53 PM..
 

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ost::Date(3)						     Library Functions Manual						      ost::Date(3)

NAME
ost::Date - The Date class uses a julian date representation of the current year, month, and day. SYNOPSIS
#include <numbers.h> Inherited by ost::DateNumber, and ost::Datetime. Public Member Functions Date (time_t tm) Date (tm *dt) Date (char *str, size_t size=0) Date (int year, unsigned month, unsigned day) Date () virtual ~Date () int getYear (void) const unsigned getMonth (void) const unsigned getDay (void) const unsigned getDayOfWeek (void) const char * getDate (char *buffer) const time_t getDate (void) const time_t getDate (tm *buf) const long getValue (void) const void setDate (const char *str, size_t size=0) bool isValid (void) const operator long () const String operator() () const Date & operator++ () Date & operator-- () Date & operator+= (const long val) Date & operator-= (const long val) int operator== (const Date &date) int operator!= (const Date &date) int operator< (const Date &date) int operator<= (const Date &date) int operator> (const Date &date) int operator>= (const Date &date) bool operator! () const Protected Member Functions void toJulian (long year, long month, long day) void fromJulian (char *buf) const virtual void update (void) A method to use to 'post' any changed values when shadowing a mixed object class. Protected Attributes long julian Friends Date operator+ (const Date &date, const long val) Date operator- (const Date &date, const long val) Date operator+ (const long val, const Date &date) Date operator- (const long val, const Date &date) Detailed Description The Date class uses a julian date representation of the current year, month, and day. This is then manipulated in several forms and may be exported as needed. Author: David Sugar dyfet@ostel.com julian number based date class. Constructor &; Destructor Documentation ost::Date::Date (time_ttm) ost::Date::Date (tm *dt) ost::Date::Date (char *str, size_tsize = 0) ost::Date::Date (intyear, unsignedmonth, unsignedday) ost::Date::Date () virtual ost::Date::~Date () [virtual] Member Function Documentation void ost::Date::fromJulian (char *buf) const [protected] char* ost::Date::getDate (char *buffer) const time_t ost::Date::getDate (void) const time_t ost::Date::getDate (tm *buf) const unsigned ost::Date::getDay (void) const unsigned ost::Date::getDayOfWeek (void) const unsigned ost::Date::getMonth (void) const long ost::Date::getValue (void) const int ost::Date::getYear (void) const bool ost::Date::isValid (void) const Reimplemented in ost::Datetime. ost::Date::operator long () const [inline] bool ost::Date::operator! (void) const [inline] Reimplemented in ost::Datetime. int ost::Date::operator!= (const Date &date) String ost::Date::operator() () const Date& ost::Date::operator++ () Date& ost::Date::operator+= (const longval) Date& ost::Date::operator-- () Date& ost::Date::operator-= (const longval) int ost::Date::operator< (const Date &date) int ost::Date::operator<= (const Date &date) int ost::Date::operator== (const Date &date) int ost::Date::operator> (const Date &date) int ost::Date::operator>= (const Date &date) void ost::Date::setDate (const char *str, size_tsize = 0) void ost::Date::toJulian (longyear, longmonth, longday) [protected] virtual void ost::Date::update (void) [protected], [virtual] A method to use to 'post' any changed values when shadowing a mixed object class. This is used by DateNumber. Reimplemented in ost::DateNumber. Friends And Related Function Documentation Date operator+ (const Date &date, const longval) [friend] Date operator+ (const longval, const Date &date) [friend] Date operator- (const Date &date, const longval) [friend] Date operator- (const longval, const Date &date) [friend] Member Data Documentation long ost::Date::julian [protected] Author Generated automatically by Doxygen for GNU CommonC++ from the source code. GNU CommonC++ Sat Jun 23 2012 ost::Date(3)
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