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I'm having an issue using Barcat to show a dialog while compressing? Wondering what the exact syntax is?

here's a link to Barcat

things I've tried are

  bar -n apache24.tar.xz |tar -Jcf -
  bar -n apache24.tar.xz |tar -Jcf - apache24/
  bar -n apache24.tar.xz |tar -Jcf apache24/ - 
  bar -c 'tar -Jcf apache24/ apache.tar.xz'
  bar -c 'tar -Jcf apache.tar.xz apache24/'
  bar -n apache24.tar.xz apache24/ |tar -Jcf - 
  bar -n apache24/ apache24.tar.xz |tar -Jcf - 
  bar -n apache24/ |tar -Jcf - 
  bar -n apache24/ |tar -Jcf -- apache.tar.xz
  bar -n apache.tar.xz  |tar -Jcf apache24/ --
  bar -n apache.tar.xz -- apache24/ |tar -Jcf -
  bar -n apache.tar.xz apache24/ |tar -Jcf -
  bar -n apache.tar.xz apache24/ |tar -Jcf --
  bar -n apache24/ apache.tar.xz |tar -Jcf -

Excuse any dupes I just pasted from history

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