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doc: free.1 total memory doesn't include reserved memory

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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>
This commit is contained in:
Craig Small 2023-01-16 17:29:36 +11:00
parent 647a2aa9e1
commit dbde44b528
1 changed files with 3 additions and 2 deletions
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5
man/free.1
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@ -2,7 +2,7 @@
.\" This page Copyright (C) 1993 Matt Welsh, mdw@sunsite.unc.edu.
.\" Long options where added at April 15th, 2011.
.\" Freely distributable under the terms of the GPL
.TH FREE 1 "2022-06-25" "procps-ng" "User Commands"
.TH FREE 1 "2023-01-16" "procps-ng" "User Commands"
.SH NAME
free \- Display amount of free and used memory in the system
.SH SYNOPSIS
@ -16,7 +16,8 @@ information is gathered by parsing /proc/meminfo. The displayed
columns are:
.TP
\fBtotal\fR
Total installed memory (MemTotal and SwapTotal in /proc/meminfo)
Total usable memory (MemTotal and SwapTotal in /proc/meminfo). This includes
the physical and swap memory minus a few reserved bits and kernel binary code.
.TP
\fBused\fR
Used or unavailable memory (calculated as \fBtotal\fR - \fBavailable\fR)