AmigaDOS compare two dates

[quantum8]

I'm writing a script and am wondering if there's a command/tool that converts two strings to dates to compare and return the result for the newest one.


The type of result I'm after looks similar to the pseudo below

IF "19-Jan-17" GT "10-Jun-17"
 echo "file 19-Dec-17 is greater than 10-Jun-17"
ELSE
 echo "file is older, doing nothing"
ENDIF

[Exodous]

Is this for copying files?

If so, take a look at COPY NEWER

https://wiki.amigaos.net/wiki/AmigaO...Reference#COPY


"NEWER Overwrite files only if the destination file is older than the source file or if there is no destination file by the same name as the source file."

[quantum8]

It's for copying files and then extracting them, so I want to be able to compare the date of the archived file, as generated by the LIST command, with the a file in the unarchived directory, or with a specified date string.

I know in linux I can use "date -d $DATEVARIABLE +%s" for each date parameter and compare the two after that, but it seems I have to convert the default Amiga string DD-MMM-YY into a number format such as YY-MM-DD before I can do a direct comparison.

[quantum8]

I found a way simple way around it by using the SINCE option in the LIST command.

There's a lot for me to learn in Amiga scripting!

[daxb]

Amiga DOS is very limited. If you want to do something more advanced you soon start to search for a better solution because it will become complicated and workarounds are needed. A more comfortable way is to use ARexx instead.

[quantum8]

For what I'm wanting to do it doesn't seem too bad. Especially easier after I kit it out with some standard UNIX commands like sed and cut.