TLDR
Enter a command. For example: hcitool, manpath, update rc.d.

free

 
Display amount of free and used memory in the system. More information: https://manned.org/free.
 
  • Display system memory:
     
    free
     
  • Display memory in Bytes/KB/MB/GB:
     
    free -{{b|k|m|g}}
     
  • Display memory in human-readable units:
     
    free -h
     
  • Refresh the output every 2 seconds:
     
    free -s {{2}}

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