Renaming Files

The copy, Ftp, Sftp, decrypt tasks etc. have a rename field.
If the rename field is filled, the rename is done using regular expression. 
You can use 3 different options to rename:

Option 1: Filename field is used as the FIND string.
First the filename field entry is compared against the actual filename using regular expression Find method. If a match is found, then the Filename field pattern entered is replaced with the entry in the Rename Filename field.

Option 2: Rename field specifies FIND string using <REPLACE>.
Rename field format:
find_string<REPLACE>replace_string
.txt.gpg<REPLACE>.txt
[0-9]<REPLACE>number

First the filename field entry is compared against the actual filename using regular expression Find method. If a match is found, then the rename field is parsed and the 'find_string' is replaced with the 'rename_string'.

NOTE1: find_string can be a regex pattern
NOTE2: Option 2 gives more flexibility. Here you can specify the filename filter to find files in the filename field. Then, in the rename field, use completely different 'find' and 'replace' strings.

Option 3: Rename field specifies group regex pattern search/replace using <GROUP>.
Rename field format:
regex_(group)_pattern<GROUP>group_formatted_string

([0-9])<GROUP>group1.group2

( ) is the regex grouping pattern
The string group1 will be replaced by the first group corresponding to the regex group pattern.
The string group2 will be replaced by the second group corresponding to the regex group pattern.

Examples:

Option 1:
Actual Filenames in folder = Atest.txt.gpg , Btest.txt.gpg
Filename field entry = .txt.gpg
Rename field entry = .txt
resulting filenames = Atest.txt & Btest.txt
i.e. Both files pass the filename filter and will be processed.

Option 2:
Actual Filenames in folder = Atest.txt.gpg , Btest.txt.gpg
Filename field entry = Atest
rename field entry = .txt.gpg<REPLACE>.txt
resulting filename = Atest.txt
Here only Atest.txt.gpg passes the filename filter. Btest.txt.gpg is not processed

Option 3:
Actual Filename in folder = 9-5-7.txt
Filename field entry = .txt
rename field entry = ([0-9])<GROUP>group3_group1.txt
resulting filename = 7_9.txt

here group1 = 9, group2 = 5, and group3 = 7 because of the regex group pattern ([0-9])