From: dan@djph.net   
      
   On 2023-11-05, bilsch01 wrote:   
   > On 11/2/2023 3:39 AM, Paul wrote:   
   >> [...]   
   >> With gzip, you have to be careful of the syntax,   
   >> so the original file is not deleted. That's what I spent   
   >> most of my time playing with, is checking for deletion.   
   >   
   > Can you be more specific about what syntax will result in deletion of   
   > original file?   
      
   Any invocation on a file (i.e. NOT piped input) that does not include   
   the '-k' switch.   
      
     gzip file.txt <-- will create file.txt.gz, and delete file.txt   
     gzip -k file.txt <-- will create file.txt.gz, and KEEP file.txt   
      
      
   Piped input (e.g. 'command | gzip ') has no file to keep in the first   
   place.   
      
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