FILECOMPAREFROM - Compare file size and time/date stamp from FTP site

FILECOMPAREFROM Compare file size and time/date stamp from FTP site

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Syntax:	FILECOMPAREFROM	[ file name ]
Arguments:	[ file name ]	Variable or string defining a file name on the FTP site.
Options:	/tz=xx	Timezone adjustment (in hours) between the local PC and the FTP site; value is expressed as a positive or negative integer; used when local and server file’s time/date stamps are compared. This value overrides and replaces the timezone adjustment set using the TIMEZONE script command.

This command is not valid with HTTP/HTTPS sites.

This command compares the size and date/time stamp of a specified file on the FTP site with a file of the same name on the local PC in the current folder.

The results of the comparison are saved in two internal script variables: size result is saved in %comparesize and date/time result is saved in %comparedate. These variables may then be tested using the IFSIZE and IFDATE commands respectively. (Do not use the IFERROR command.)

Consider the following example where a file on the FTP site is compared to a correspondingly named local file and a conditional branch is taken if the files are the same size.

FILECOMPAREFROM "server_file"

IFSIZE $ERROR_FILES_SAME_SIZE goto save_this_file

If you are not using the TIMEZONE script command, you may specify the /tz option to account for differences in timezones between Robo-FTP and the FTP site. This is important for accurate file date and time stamp comparisons. For example, if you are using Robo-FTP in the Central U.S. timezone and the FTP site is located in the Eastern U.S. timezone there is a one-hour difference between the file system times of Robo-FTP’s PC and the FTP site. To allow for this in the FILECOMPAREFROM command, the command would look like the following which indicates that the FTP site is one hour ahead:

FILECOMPAREFROM "server_file" /tz=+1

Further, if the FTP site is located in the Pacific U.S. timezone there is a two-hour difference the other way between the file system times of Robo-FTP’s PC and the FTP site. To allow for this, the command would look like the following which indicates that the FTP site is two hours behind:

FILECOMPAREFROM "server_file" /tz=-2

Related Command(s): IFSIZE, IFDATE, FILECOMPARETO