| 
                  free
                 | 
                
                   
                    Reports the amount of free and used memory (both physical
                    and swap memory) in the system
                   
                 | 
              
              
                | 
                  kill
                 | 
                
                   
                    Sends signals to processes
                   
                 | 
              
              
                | 
                  pgrep
                 | 
                
                   
                    Looks up processes based on their name and other
                    attributes
                   
                 | 
              
              
                | 
                  pkill
                 | 
                
                   
                    Signals processes based on their name and other
                    attributes
                   
                 | 
              
              
                | 
                  pmap
                 | 
                
                   
                    Reports the memory map of the given process
                   
                 | 
              
              
                | 
                  ps
                 | 
                
                   
                    Lists the current running processes
                   
                 | 
              
              
                | 
                  skill
                 | 
                
                   
                    Sends signals to processes matching the given criteria
                   
                 | 
              
              
                | 
                  snice
                 | 
                
                   
                    Changes the scheduling priority of processes matching the
                    given criteria
                   
                 | 
              
              
                | 
                  sysctl
                 | 
                
                   
                    Modifies kernel parameters at run time
                   
                 | 
              
              
                | 
                  tload
                 | 
                
                   
                    Prints a graph of the current system load average
                   
                 | 
              
              
                | 
                  top
                 | 
                
                   
                    Displays a list of the most CPU intensive processes; it
                    provides an ongoing look at processor activity in real
                    time
                   
                 | 
              
              
                | 
                  uptime
                 | 
                
                   
                    Reports how long the system has been running, how many
                    users are logged on, and the system load averages
                   
                 | 
              
              
                | 
                  vmstat
                 | 
                
                   
                    Reports virtual memory statistics, giving information
                    about processes, memory, paging, block Input/Output (IO),
                    traps, and CPU activity
                   
                 | 
              
              
                | 
                  w
                 | 
                
                   
                    Shows which users are currently logged on, where, and
                    since when
                   
                 | 
              
              
                | 
                  watch
                 | 
                
                   
                    Runs a given command repeatedly, displaying the first
                    screen-full of its output; this allows a user to watch
                    the output change over time
                   
                 | 
              
              
                | 
                  libproc
                 | 
                
                   
                    Contains the functions used by most programs in this
                    package
                   
                 |