You can use batch mode with command-line options.

Table 1. Command-Line Options in Batch Mode
Option Description
a Show all statistics. This option overrides configuration file setups and shows all statistics. The configuration file can be the default ~/.esxtop50rc configuration file or a user-defined configuration file.
b Runs resxtop (or esxtop) in batch mode.
c filename Load a user-defined configuration file. If the -c option is not used, the default configuration filename is ~/.esxtop41rc. Create your own configuration file, specifying a different filename, using the W single-key interactive command.
d Specifies the delay between statistics snapshots. The default is five seconds. The minimum is two seconds. If a delay of less than two seconds is specified, the delay is set to two seconds.
n Number of iterations. resxtop (or esxtop) collects and saves statistics this number of times, and then exits.
server The name of the remote server host to connect to (required, resxtop only).
vihost If you connect indirectly (through vCenter Server), this option should contain the name of the ESXi host you connect to. If you connect directly to the ESXi host, this option is not used.
Note: The host name needs to be the same as what appears in the vSphere Web Client.
portnumber The port number to connect to on the remote server. The default port is 443, and unless this is changed on the server, this option is not needed. (resxtop only)
username The user name to be authenticated when connecting to the remote host. You are prompted by the remote server for a password, as well (resxtop only).