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Top Forums Shell Programming and Scripting Date: invalid date trying to set Linux date in specific format Post 303028736 by apmcd47 on Monday 14th of January 2019 04:51:43 AM
Old 01-14-2019
Dates specified with hyphens (-) as delimiters are assumed to be in ISO 8601 format, with the year first, therefore:
Code:
$ date "+%d-%m-%C%y %H:%M:%S" -d"2017-01-19 00:05:01"
19-01-2017 00:05:01

So basically 19-01-2017 does not conform to the expected format of [cc]yy-mm-dd and so was rejected.

You could use slashes (/) to delimit the day, month and year, unfortunately date will assume American date format:
Code:
$ date "+%d-%m-%C%y %H:%M:%S" -d "12/01/2017 00:05:01"
01-12-2017 00:05:01
$ date "+%d-%m-%C%y %H:%M:%S" -d "19/01/2017 00:05:01"
date: invalid date ‘19/01/2017 00:05:01'

Personally I would use the year-month-day format.

Andrew
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sttime(3)						    ShapeTools Toolkit Library							 sttime(3)

NAME
stMktime, stWriteTime - date and time handling SYNOPSIS
#include <config.h> #include <sttk.h.h> time_tstMktime (char *string); char*stWriteTime (time_t date); DESCRIPTION
stMktime scans the given string and tries to read a date and time from it. It understands various formats of date strings. The following is a list of all valid formats, optional parts in brackets. [Tue] Jan 5[,] [19]93 This includes the standard asctime(3) format. Jan 5 With no year given, the year defaults to the current year. [19]93/01/05 This notation requires month and day represented by exactly two digits. 5.1.[19]93 This is the usual German notation. 5.1. German notation referencing the current year. A certain time, given together with the date must always have the following form. hours:minutes[:seconds] Each of the fields must be an integer value within the proper range (hours: 0-23, minutes and seconds: 0-59). Values below 10 may be written as one digit numbers. The time value may be placed anywhere in the date string: at the beginning, at the end, or somewhere in the middle. Any amount of white- space may be given between a field of the time value and the separating colon. The time is always considered to be local time. stWriteTime generates a time string similar to asctime(3) from its date argument. SEE ALSO
asctime(3) BUGS
Time Zone Names within the time string (like `MET') are not handled properly. In most cases they will cause a failure. sttk-1.7 Thu Jun 24 17:43:35 1993 sttime(3)
All times are GMT -4. The time now is 04:53 AM.
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