$ ./vxi11_cmd 192.168.0.10
Input command or query ('q' to exit): *IDN?
TEKTRONIX,AFG3102,C023040,SCPI:99.0 FV:3.1.1
Input command or query ('q' to exit): SOURCE1:PULSE:PERIOD
Input command or query ('q' to exit): SOURCE1:PULSE:WIDTH
Input command or query ('q' to exit): *IDN?
TEKTRONIX,AFG3102,C023040,SCPI:99.0 FV:3.1.1
Input command or query ('q' to exit): SOUR1:PULS:PER?
1.00000E-6
Input command or query ('q' to exit): SOUR1:PULS:DUTY?
vxi11_user: read error: 15
*** [ NOTHING RECEIVED ] ***
Input command or query ('q' to exit): SOUR1:PULS:PER 200ns
Input command or query ('q' to exit): SOUR1:PULS:PER 2000ns
Input command or query ('q' to exit): SOUR1:PULS:PER?
2.00000E-6
Input command or query ('q' to exit): SOUR1:PULS:PER 20000ns
Input command or query ('q' to exit): SOUR1:BURS:MODE?
TRIG
Input command or query ('q' to exit): SOUR1:VOLT:AMP?
vxi11_user: read error: 15
*** [ NOTHING RECEIVED ] ***
Input command or query ('q' to exit): SOUR1:VOLT:OFF?
vxi11_user: read error: 15
*** [ NOTHING RECEIVED ] ***
Input command or query ('q' to exit): SOUR1:VOLT:OFFSET?
0.0E0
Input command or query ('q' to exit): SOUR1:VOLT:AMPLITUDE?
1.000E0
Input command or query ('q' to exit):  SOUR1:VOLT:LEVEL:IMM:AMPLITUDE 0.5
Input command or query ('q' to exit): q
$ ./vxi11_cmd 192.168.0.10
Input command or query ('q' to exit): *IDN?
TEKTRONIX,AFG3102,C023040,SCPI:99.0 FV:3.1.1

Input command or query ('q' to exit): *RCL 4
Input command or query ('q' to exit): q

$ ./vxi11_cmd 192.168.0.10
Input command or query ('q' to exit): SOUR1:VOLT:LEVEL:IMM:AMPLITUDE 0.1
Input command or query ('q' to exit): SOUR1:VOLT:LEVEL:IMM:AMPLITUDE 0.05
Input command or query ('q' to exit): q


$ ./vxi11_send 
usage: ./vxi11_send your.inst.ip.addr command
$ ./vxi11_send 192.168.0.10 "SOUR1:VOLT:LEVEL:IMM:AMPLITUDE 0.1"