̾??

sysctl — ?????ͥ????֤μ?????????

????

sysctl [-bdehNnox] name[=value] ... sysctl [-bdehNnox] -a

????

sysctl ?ϥ????ͥ????֤??????Ф???Ŭ?ڤʸ??¤??????? ?ץ????????????ͥ????֤????ꤹ?뤳?Ȥ??????ޤ??? ?????Ф??줿?ꡢ???ꤵ?줿?ꤷ?????֤ϡ? “Management Information Base” (“MIB”) ???????ȤäƵ??Ҥ????ޤ??? ???η????Ǥϡ????Ǥϥɥå? ``.'' ????³?????ޤ???

?ʲ??Υ??ץ??????????Ѳ?ǽ?Ǥ?:

-A

-o -a ???????Ǥ? (?ߴ?????)??

-a

???????Ѳ?ǽ?ʡ??ǡ??????????Τ??ʤ????? (?ʲ??????????????ѿ??ȾΤ???) ?Ǥʤ??ͤ????󤷤ޤ??? 1 ?İʾ????ѿ?̾?????ޥ??ɥ饤???˻??ꤵ?줿???硢 ?ܥ??ץ???????̵?뤵???ޤ???

-b

?ѿ????ͤ??ù??????ˡ??Х??ʥ???????ɽ?????ޤ??? ?ѿ?̾?䡢?Ǹ??β???ʸ???Ͻ??Ϥ????ޤ????? ?????ϡ?ñ?????ѿ????Ф?????????ݤ??????Ǥ??礦??

-d

?ѿ????ͤ??????˲?????ɽ?????ޤ???

-e

?ѿ???̾?????ͤ??? ‘=’ ?Ƕ??ڤ??ޤ??? sysctl ?桼?ƥ????ƥ??˥ե????ɥХå???ǽ?ʽ??Ϥ????????뤿????ͭ?ѤǤ??? -N ?ޤ??? -n ?????ꤵ???????硢?ޤ????ѿ??????ꤵ???????硢?ܥ??ץ???????̵?뤵???ޤ???

-h

?ޥ??????ɤ߰פ??ե????ޥåȤǤϤʤ????ʹ֤??ɤ߰פ??ե????ޥåȤǽ??Ϥ??ޤ???

-N

?ͤν??Ϥ??????????ơ??ѿ?̾?Τߤ?ɽ?????ޤ??? ?ץ?????????ǽ???䴰??ǽ?????ĥ??????ǡ?ͭ?ѤǤ??? zsh(1) ???ѿ?̾???䴰?????ˤϡ????Υ????ɤ????Ѥ??ޤ?:

listsysctls () { set -A reply $(sysctl -AN ${1%.*}) }
compctl -K listsysctls sysctl

tcsh(1) ???ѿ?̾???䴰?????ˤϡ????Τ褦?ˤ??ޤ?:

complete sysctl 'n/*/`sysctl
      -Na`/'

-n

?ѿ?̾?ν??Ϥ??????????ơ??ͤ?????ɽ???????ޤ??? ?????ϥ??????ѿ??????ꤹ???Τ?????Ω???ޤ??? ???Ȥ??С??ڡ????????????ѿ? psize ????¸?????ˤϡ??ʲ??Τ褦?ˤ??ޤ?:

set psize=`sysctl -n
      hw.pagesize`

-o

???????????ͤ?ɽ?????ޤ? (?̾????????????ޤ?)?? ?񼰤?Ĺ????ɽ?????졢?ͤκǽ??? 16 ?Х??Ȥ? 16 ?ʿ??ǥ????פ????ޤ???

-X

-x -a ???????Ǥ? (?ߴ?????)??

-x

-o ??Ʊ?ͤǤ????? ???????????ѿ??κǽ??ο??Х??Ȥ??????????Ƥ????Ƥ? 16 ?ʿ??ǥ????פ????ޤ???

sysctl ???????????????ϡ???????ʸ???󡢥ǥХ??? (dev_t) ?????????????ѿ??Ǥ??? sysctl ?桼?ƥ????ƥ??Ϥ????Ĥ??η??????????ѿ??η??????ΤäƤ????????ǡ? ?????ʳ??Τ??Τ? ?Ф??Ƥ? 16 ?ʥ????פ??????ޤ??? ???????????ѿ??ξ????ϡ? ps(1), systat(1), netstat(1) ?ʤɤ????̤???Ū?Υץ????????ˤ??äƼ??????줿?????ˡ?????????Ū?Ǥ???

?̾??Υ????ƥ?ư?????ˤϽ????Ǥ??ʤ??ѿ??Τ????Ĥ??ϡ? loader(8) ???塼?ʥ֥??ǽ?????ǽ?Ǥ??? ?㤨?С????????? loader.conf(5) ?????ꤹ?뤳?ȤǼ¸??Ǥ??ޤ??? ?ɤΤ褦?ʥ??塼?ʥ֥뤬???Ѳ?ǽ?????????Ƥ????????ɤΤ褦?????ꤹ???Τ? ?Ȥ??????ʤ??????ˤĤ??Ƥϡ? loader.conf(5) ?򻲾Ȥ??Ƥ?????????

ʸ???????????ξ???????ñ?ˤޤȤ??ưʲ??˼????ޤ??? ?????????ѿ??ξܺ٤??????ϡ? sysctl(3) ?򻲾Ȥ??Ƥ?????????

?ѹ???ǽ?????ϡ?Ŭ?ڤʸ??¤????ĥץ????????????ͤ??ѹ? ?Ǥ??뤫?ɤ????򼨤??Ƥ??ޤ??? ʸ?????????????ǥХ????ͤ? sysctl ????????ǽ?Ǥ??? ?ǥХ????? value ?ϡ??????饯???ǥХ??????ڥ??????ե?????̾?ǻ?????ǽ?Ǥ??? ?ü????? off ?? none ?? “?ǥХ???̵??” ????̣???ޤ???

̾??	??	?ѹ???ǽ
kern.ostype	ʸ????	no
kern.osrelease	ʸ????	no
kern.osrevision	????	no
kern.version	ʸ????	no
kern.maxvnodes	????	yes
kern.maxproc	????	no
kern.maxprocperuid	????	yes
kern.maxfiles	????	yes
kern.maxfilesperproc	????	yes
kern.argmax	????	no
kern.securelevel	????	???䤹?Τ?
kern.hostname	ʸ????	yes
kern.hostid	????	yes
kern.clockrate	struct	no
kern.posix1version	????	no
kern.ngroups	????	no
kern.job_control	????	no
kern.saved_ids	????	no
kern.boottime	struct	no
kern.domainname	ʸ????	yes
kern.filedelay	????	yes
kern.dirdelay	????	yes
kern.metadelay	????	yes
kern.osreldate	ʸ????	no
kern.bootfile	ʸ????	yes
kern.corefile	ʸ????	yes
kern.dumpdev	dev_t	yes
kern.logsigexit	????	yes
security.bsd.suser_enabled	????	yes
security.bsd.see_other_uids	????	yes
security.bsd.unprivileged_proc_debug	????	yes
security.bsd.unprivileged_read_msgbuf	????	yes
vm.loadavg	struct	no
hw.machine	ʸ????	no
hw.model	ʸ????	no
hw.ncpu	????	no
hw.byteorder	????	no
hw.physmem	????	no
hw.usermem	????	no
hw.pagesize	????	no
hw.floatingpoint	????	no
hw.machine_arch	ʸ????	no
machdep.console_device	dev_t	no
machdep.adjkerntz	????	yes
machdep.disable_rtc_set	????	yes
machdep.guessed_bootdev	ʸ????	no
user.cs_path	ʸ????	no
user.bc_base_max	????	no
user.bc_dim_max	????	no
user.bc_scale_max	????	no
user.bc_string_max	????	no
user.coll_weights_max	????	no
user.expr_nest_max	????	no
user.line_max	????	no
user.re_dup_max	????	no
user.posix2_version	????	no
user.posix2_c_bind	????	no
user.posix2_c_dev	????	no
user.posix2_char_term	????	no
user.posix2_fort_dev	????	no
user.posix2_fort_run	????	no
user.posix2_localedef	????	no
user.posix2_sw_dev	????	no
user.posix2_upe	????	no
user.stream_max	????	no
user.tzname_max	????	no

??????

???Ȥ??С??????ƥ????ǵ??????Ƥ????????Υץ??????????Τꤿ?? ?Ȥ??ϡ??ʲ??Τ褦?ˤ??ޤ?:

sysctl kern.maxproc

?????ƥ????ǵ??????Ƥ????????Υץ????????? 1000 ?????ꤹ?? ?ˤϡ??ʲ??Τ褦?ˤ??ޤ?:

sysctl
  kern.maxprocperuid=1000

?????å????????פ˻??Ѥ????ǥХ????ϼ??Τ褦?˻?????ǽ?Ǥ?:

sysctl
  kern.dumpdev=/dev/somedev

?????ϼ????????Ǥ?

dumpon /dev/somedev

?????ƥ??Υ????å??졼?Ȥ˴ؤ??????????????ˤϡ??ʲ??? ?褦?ˤ??ޤ?:

sysctl kern.clockrate

?????ƥ????? (?????ɡ????٥졼??) ???????˴ؤ????????? ?????ˤϡ??ʲ??Τ褦?ˤ??ޤ?:

sysctl vm.loadavg

?????˵󤲤????ΰʳ????ѿ???¸?ߤ??ޤ??? ???????˴ؤ??????꿼????̣???Τ? ???äȤ??ɤ??????ġ??????餯ͣ??????ˡ?ϡ????????????????Ƥ??륽?????????ɤ? ?ߤ????Ǥ??뤳?Ȥϵ????Τʤ????¤Ǥ??礦??

??Ϣ?ե?????

<sys/sysctl.h>: ?ȥåץ??٥??μ??̻ҡ??? 2 ???٥??Υ????ͥ?/?ϡ??ɥ????????̻ҡ? ?????ƥ桼?????٥뼱?̻Ҥ?????
<sys/socket.h>: ?? 2 ???٥??Υͥåȥ?????̻Ҥ?????
<sys/gmon.h>: ?? 3 ???٥??Υץ??ե????뼱?̻Ҥ?????
<vm/vm_param.h>: ?? 2 ???٥??β??ۥ????꼱?̻Ҥ?????
<netinet/in.h>: ?? 3 ???٥??Υ??󥿡??ͥåȼ??̻Ҥ? ?? 4 ???٥??? IP ???̻Ҥ?????
<netinet/icmp_var.h>: ?? 4 ???٥??? ICMP ???̻Ҥ?????
<netinet/udp_var.h>: ?? 4 ???٥??? UDP ???̻Ҥ?????

?ߴ???

-w ???ץ??????Ͽ侩?????Ƥ??餺???ۤä?̵?뤵???ޤ???

??Ϣ????

sysctl(3), loader.conf(5), sysctl.conf(5), loader(8)

?Х?

?????Ǥ? sysctl ?桼?ƥ????ƥ??ϡ?sysctl ?ĥ꡼?????ס??????ӡ???????̾???ξ??????????ݤˡ? ʸ?񲽤????Ƥ??ʤ??????ͥ??? sysctl ??ǽ?ؤΥ??󥿥ե??????????Ѥ??Ƥ??ޤ??? ??????ˡ?˴ؤ????????????󥿥ե??????ϡ????߸?Ƥ???Ǥ???

????

sysctl ?桼?ƥ????ƥ??? 4.4BSD ?ǤϤ??????о줷?ޤ?????

FreeBSD 2.2 ?? sysctl ???????????ɤ????Ƥ??ޤ???