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Manually tweaking date format, DSM 7.x

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2
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NAS
DS423+, RS816 w/Expansion
Operating system
  1. Linux
  2. Windows
Mobile operating system
  1. Android
Fellow techies,

I want to add/use a specific date format in DSM, one which does not appear in its selection list. Specifically, 'dd-MMM-yy' (Example: 15-Aug-24).

I was able to do this in Ubuntu 22, but am not certain how to proceed with DSM. Perhaps, if I knew what version of Linux the current DSM is running under....??

Insights appreciated. Thanks!
 
There are two places to change, Personal and Global.
2024-08-16_11-04-12.webp


2024-08-16_11-05-08.webp


Specifically, 'dd-MMM-yy' (Example: 15-Aug-24).
That's not possible.
 
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There are two places to change, Personal and Global.
View attachment 15479

View attachment 15480


That's not possible.
Pardon, but I don't believe that's correct. From what I've read, it's possible to control just about every aspect of date and time formatting through the locale configurations common to every Linux/Unix system.

I will investigate this further and post my findings.
 
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Last edited:
probably it can be done from the command line, unsupported.
Main issue will probably display formatting. The standard have 10 wide, and your preferred display is 9 characters. This may lead to issues in several apps, export/log files, ... So as always, be careful not to bring your system into trouble.
 
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Pardon, but I don't believe that's correct. From what I've read, it's possible to control just about every aspect of date and time formatting through the locale configurations common to every Linux/Unix system.
I know that DSM is a Linux Distro but, that does not mean that DSM has all options showing in the GUI.
In addition, besides that DSM is based on Linux, Synology has it's own implementation on top.

Anyway, in SSH/CLI the NAS shows (if that is what you mean, if not, then show us what you mean.:

Usage: date [OPTION]... [+FORMAT]
or: date [-u|--utc|--universal] [MMDDhhmm[[CC]YY][.ss]]
Display the current time in the given FORMAT, or set the system date.

Mandatory arguments to long options are mandatory for short options too.
-d, --date=STRING display time described by STRING, not 'now'
--debug annotate the parsed date,
and warn about questionable usage to stderr
-f, --file=DATEFILE like --date; once for each line of DATEFILE
-I[FMT], --iso-8601[=FMT] output date/time in ISO 8601 format.
FMT='date' for date only (the default),
'hours', 'minutes', 'seconds', or 'ns'
for date and time to the indicated precision.
Example: 2006-08-14T02:34:56-06:00
-R, --rfc-email output date and time in RFC 5322 format.
Example: Mon, 14 Aug 2006 02:34:56 -0600
--rfc-3339=FMT output date/time in RFC 3339 format.
FMT='date', 'seconds', or 'ns'
for date and time to the indicated precision.
Example: 2006-08-14 02:34:56-06:00
-r, --reference=FILE display the last modification time of FILE
-s, --set=STRING set time described by STRING
-u, --utc, --universal print or set Coordinated Universal Time (UTC)
--help display this help and exit
--version output version information and exit

FORMAT controls the output. Interpreted sequences are:

%% a literal %
%a locale's abbreviated weekday name (e.g., Sun)
%A locale's full weekday name (e.g., Sunday)
%b locale's abbreviated month name (e.g., Jan)
%B locale's full month name (e.g., January)
%c locale's date and time (e.g., Thu Mar 3 23:05:25 2005)
%C century; like %Y, except omit last two digits (e.g., 20)
%d day of month (e.g., 01)
%D date; same as %m/%d/%y
%e day of month, space padded; same as %_d
%F full date; same as %Y-%m-%d
%g last two digits of year of ISO week number (see %G)
%G year of ISO week number (see %V); normally useful only with %V
%h same as %b
%H hour (00..23)
%I hour (01..12)
%j day of year (001..366)
%k hour, space padded ( 0..23); same as %_H
%l hour, space padded ( 1..12); same as %_I
%m month (01..12)
%M minute (00..59)
%n a newline
%N nanoseconds (000000000..999999999)
%p locale's equivalent of either AM or PM; blank if not known
%P like %p, but lower case
%q quarter of year (1..4)
%r locale's 12-hour clock time (e.g., 11:11:04 PM)
%R 24-hour hour and minute; same as %H:%M
%s seconds since 1970-01-01 00:00:00 UTC
%S second (00..60)
%t a tab
%T time; same as %H:%M:%S
%u day of week (1..7); 1 is Monday
%U week number of year, with Sunday as first day of week (00..53)
%V ISO week number, with Monday as first day of week (01..53)
%w day of week (0..6); 0 is Sunday
%W week number of year, with Monday as first day of week (00..53)
%x locale's date representation (e.g., 12/31/99)
%X locale's time representation (e.g., 23:13:48)
%y last two digits of year (00..99)
%Y year
%z +hhmm numeric time zone (e.g., -0400)
%:z +hh:mm numeric time zone (e.g., -04:00)
%::z +hh:mm:ss numeric time zone (e.g., -04:00:00)
%:::z numeric time zone with : to necessary precision (e.g., -04, +05:30)
%Z alphabetic time zone abbreviation (e.g., EDT)

By default, date pads numeric fields with zeroes.
The following optional flags may follow '%':

- (hyphen) do not pad the field
_ (underscore) pad with spaces
0 (zero) pad with zeros
^ use upper case if possible
# use opposite case if possible

After any flags comes an optional field width, as a decimal number;
then an optional modifier, which is either
E to use the locale's alternate representations if available, or
O to use the locale's alternate numeric symbols if available.

Examples:
Convert seconds since the epoch (1970-01-01 UTC) to a date
$ date --date='@2147483647'

Show the time on the west coast of the US (use tzselect(1) to find TZ)
$ TZ='America/Los_Angeles' date

Show the local time for 9AM next Friday on the west coast of the US
$ date --date='TZ="America/Los_Angeles" 09:00 next Fri'

GNU coreutils online help: <Coreutils - GNU core utilities>
Full documentation at: <date invocation (GNU Coreutils 9.5)>
or available locally via: info '(coreutils) date invocation'
I'm not going to play with it and there's no guarantee this will work well in the GUI.
 
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