TLDR
Enter a command. For example: dvc add, babel, xml select, xml format.

while

 
Simple shell loop. More information: https://manned.org/while.
 
  • Read stdin and perform an action on every line:
     
    while read line; do echo "$line"; done
     
  • Execute a command forever once every second:
     
    while :; do {{command}}; sleep 1; done

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