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1 <refentry id="free">
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2 <refnamediv>
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3 <refname>FREE</refname>
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4 <refpurpose>Display free space remaining on mass-storage device</refpurpose>
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5 </refnamediv>
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6
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7 <refsynopsisdiv>
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8 <cmdsynopsis>
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9 <command>FREE</command>
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10 <arg choice="plain">
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11 &replstart;devname&replend;
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12 </arg>
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13 </cmdsynopsis>
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14 </refsynopsisdiv>
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15
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16 <refsect1><title>Description</title>
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17 <para>
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18 This command displays the number of unused 256-byte sectors on a
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19 device which are available for new files or for expanding existing
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20 files. The device name given must be that of a mass-storage
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21 multifile device. "Free" also displays the disk's name, creation
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22 date, and cluster size.
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23 </para>
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24 <para>
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25 Data sectors are allocated in groups called "clusters". The number
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26 of sectors per cluster depends on the storage capacity and physical
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27 characteristics of the specific device. This means that small
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28 amounts of free space may not be divisible into as many files. For
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29 example, if a given disk system uses 8 sectors per cluster, and a
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30 "free" command shows 32 sectors free, a maximum of four new files
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31 could be created even if each has only one cluster.
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32 </para>
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33 <para>
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34 For more information see: 3.10
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35 </para>
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36 </refsect1>
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37 <refsect1><title>Examples</title>
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38 <screen>
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39 OS9: free
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40 BACKUP DATA DISK created on: 80/06/12
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41 Capacity: 1,232 sectors (1-sector clusters)
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42 1,020 free sectors, largest block 935 sectors
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43
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44 OS9: free /D1
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45 OS-9 Documentation Disk created on: 81/04/13
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46 Capacity: 1,232 sectors (1-sector clusters)
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47 568 Free sectors, largest block 440 sectors
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48 </screen>
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49 </refsect1>
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50 </refentry>
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51
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