/usr/share/gretl/data/data4-1.gdt is in gretl-data 2016a-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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<!DOCTYPE gretldata SYSTEM "gretldata.dtd">
<gretldata version="1.3" name="data4-1" frequency="1" startobs="1" endobs="14" type="cross-section">
<description>
DATA4-1: Data on single family homes in University City
community of San Diego, in 1990.
price = sale price in thousands of dollars (Range 199.9 - 505)
sqft = square feet of living area (Range 1065 - 3000)
bedrms = number of bedrooms (Range 3 - 4)
baths = number of bathrooms (Range 1.75 - 3)
</description>
<variables count="4">
<variable name="price"
label="sale price in thousands of dollars (Range 199.9 - 505)"
/>
<variable name="sqft"
label="square feet of living area (Range 1065 - 3000)"
/>
<variable name="bedrms"
label="number of bedrooms (Range 3 - 4)"
discrete="true"
/>
<variable name="baths"
label="number of bathrooms (Range 1.75 - 3)"
/>
</variables>
<observations count="14" labels="false">
<obs>199.9 1065 3 1.75 </obs>
<obs>228 1254 3 2 </obs>
<obs>235 1300 3 2 </obs>
<obs>285 1577 4 2.5 </obs>
<obs>239 1600 3 2 </obs>
<obs>293 1750 4 2 </obs>
<obs>285 1800 4 2.75 </obs>
<obs>365 1870 4 2 </obs>
<obs>295 1935 4 2.5 </obs>
<obs>290 1948 4 2 </obs>
<obs>385 2254 4 3 </obs>
<obs>505 2600 3 2.5 </obs>
<obs>425 2800 4 3 </obs>
<obs>415 3000 4 3 </obs>
</observations>
</gretldata>
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