1FREE(1) Linux User's Manual FREE(1)
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6 free - Display amount of free and used memory in the system
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9 free [-b | -k | -m] [-o] [-s delay ] [-t] [-l] [-V]
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12 free displays the total amount of free and used physical and swap mem‐
13 ory in the system, as well as the buffers used by the kernel. The
14 shared memory column should be ignored; it is obsolete.
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16 Options
17 The -b switch displays the amount of memory in bytes; the -k switch
18 (set by default) displays it in kilobytes; the -m switch displays it in
19 megabytes.
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21 The -t switch displays a line containing the totals.
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23 The -o switch disables the display of a "buffer adjusted" line. If the
24 -o option is not specified, free subtracts buffer memory from the used
25 memory and adds it to the free memory reported.
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27 The -s switch activates continuous polling delay seconds apart. You may
28 actually specify any floating point number for delay, usleep(3) is used
29 for microsecond resolution delay times.
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31 The -l switch shows detailed low and high memory statistics.
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33 The -V switch displays version information.
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36 /proc/meminfo-- memory information
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40 ps(1), slabtop(1), vmstat(8), top(1)
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44 Written by Brian Edmonds.
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46 Send bug reports to <albert@users.sf.net>
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51Cohesive Systems 20 Mar 1993 FREE(1)