unzip user_file_batch1.csv.zip

Archive:  user_file_batch1.csv
  End-of-central-directory signature not found.  Either this file is not
  a zipfile, or it constitutes one disk of a multi-part archive.  In the
  latter case the central directory and zipfile comment will be found on
  the last disk(s) of this archive.

unzip:  cannot find zipfile directory in one of user_file_batch1.csv or
        user_file_batch1.csv.zip, and cannot find user_file_batch1.csv.ZIP, period.

uudecode user_file_batch1.csv.zip

uudecode -o user_file_batch1.csv.decoded user_file_batch1.csv.zip

# unzip ADUReport.zip
Archive:  ADUReport.zip
  End-of-central-directory signature not found.  Either this file is not
  a zipfile, or it constitutes one disk of a multi-part archive.  In the
  latter case the central directory and zipfile comment will be found on
  the last disk(s) of this archive.
unzip:  cannot find zipfile directory in one of ADUReport.zip or
        ADUReport.zip.zip, and cannot find ADUReport.zip.ZIP, period.
 #gunzip ADUReport.zip
gunzip: ADUReport.zip: unknown suffix -- ignored
 zcat ADUReport.zip

#zcat: ADUReport.zip: not in gzip format
#gzip ADUReport.zip
#l
 #zcat ADUReport.zip.gz

7z x archive.zip

jar xvf yourzipfile.zip