S3Express: Amazon S3 Command Line Utility

Amazon S3 command line utility for Windows. Copy, query, backup multiple files to S3 using the Windows command line.

S3Express FAQ and Knowledge Base

Main Page > Browse Categories > Release History > Version 1.2 (May 2014)

Version 1.2 (May 2014)

New Features:

  • Added –h command line switch to run S3Express completely hidden (i.e. no console and no user interaction).
  • Detect Windows proxy server settings and use automatically.
  • Ability to set a proxy server manually using command setopt and new option -proxyserver
  • Support 7zip as local encryption program.
  • Support a user-defined program as local encryption program.


  • Retry on request timeouts (treat a request timeout in the same manner as a network error)
  • Del command: do not ask for deletion confirmation if running simulation only.
  • Report a file size error instead of a timeout error if file size changes during uploads.
  • Made regular expression in S3Express no longer case insensitive by default. Use (?i) to make a regular expression case insensitive.
  • Switches –rinclude and -rexclude now apply to object/file names only, not to their entire path. To exclude or include objects/files based on path use variables ‘path’ and/or ‘s3_path’ in –cond switch.
  • The -reset switch of command setopt can now be applied to specific selected options only.
  • Ability to show values of specific options with command showopt.


  • Fixed issues with switches –d and –od in combination with switch –s of command ls.

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