doc: free.1 total memory doesn't include reserved memory
Updated the definition of total, because its not *all* of the installed memory but close to it. References: procps-ng/procps#247 Signed-off-by: Craig Small <csmall@dropbear.xyz>
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@ -2,7 +2,7 @@
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.\" This page Copyright (C) 1993 Matt Welsh, mdw@sunsite.unc.edu.
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.\" Long options where added at April 15th, 2011.
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.\" Freely distributable under the terms of the GPL
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.TH FREE 1 "2022-06-25" "procps-ng" "User Commands"
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.TH FREE 1 "2023-01-16" "procps-ng" "User Commands"
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.SH NAME
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free \- Display amount of free and used memory in the system
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.SH SYNOPSIS
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@ -16,7 +16,8 @@ information is gathered by parsing /proc/meminfo. The displayed
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columns are:
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.TP
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\fBtotal\fR
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Total installed memory (MemTotal and SwapTotal in /proc/meminfo)
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Total usable memory (MemTotal and SwapTotal in /proc/meminfo). This includes
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the physical and swap memory minus a few reserved bits and kernel binary code.
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.TP
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\fBused\fR
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Used or unavailable memory (calculated as \fBtotal\fR - \fBavailable\fR)
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