XPost: comp.os.linux.misc   
   From: vilmos@soti.ca   
      
   markhobley@hotpop.deletethisbit.com (Mark Hobley) writes:   
      
   > I am looking at a script written for the runscript shell. I have a line as   
   > follows:   
   >   
   > if [[ ${RC_INTERACTIVE:-yes} == "yes" ]] ; then   
   >   
   > I would like to know what the :- (colon minus) operator that follows the   
   > variable name does.   
      
   You might want to check out bash(1) and look for "Parameter Expansion".   
      
   Vilmos   
      
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