Utility for passing files and command output to Slack. More information: <https://github.com/bcicen/slackcat>.

• Post a file to Slack:
  slackcat --channel channel_name path/to/file
• Post a file to Slack with a custom filename:
  slackcat --channel channel_name --filename=filename path/to/file
• Pipe command output to Slack as a text snippet:
  command | slackcat --channel channel_name --filename=snippet_name
• Stream command output to Slack continuously:
  command | slackcat --channel channel_name --stream

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