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The utility program named "aidaget" takes one mandatory argument (the name of the target). Here's a very simple example, as it happens getting an EPICS veriable's value:

aidaget HR81:STN:VOLT//VAL
  10-Sep-2008 12:09:40  0  0  0.18099030997326265

Several , and several optional parameters control how it works.  You can specify "-help" as a parameter to see simple options. Here's that same EPICS process variable, using options to display labels, and in rows format.

aidaget HR81:STN:VOLT//VAL -labels -format=rows
time        06-Nov-2006 10:30:05
status                         0
severity                       0
value        0.22782705806669729

.  Some of the more interesting options are specific to each data-provider, which may support optional or require mandatory paramters.

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As you can see, data provider parameters are specified as -Dname1=value1 -Dname2=value2.  Note the need to enclose embedded whitespace within " marks to prevent the shell from treating it as a boundary between strings.  The output format may be specified as "columns" or "rows".  The only difference is that one is a transpose of the other.  The option "-labels" indicates that the columns (or rows) should be named.  Not all data providers supply these names, in which case you'll need to consult their documentation to interpret the column numbers.Here's a simple example that retrieves an EPICS process variable, displaying in rows format.

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Getting BPM data:

aidaget P2BPMHER//BPMS -DBPMD=38 -DREF=0
  BPMS:PR10:6012       0.0       0.0  3128.0562           0.0        17       520
  BPMS:PR10:6022       0.0       0.0  3135.6562           0.0        17       520
  BPMS:PR10:6032       0.0       0.0   3143.256           0.0        17       520
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