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37.3 ¥ª¥Ú¥ì¡¼¥Æ¥£¥ó¥°¥·¥¹¥Æ¥à´Ä¶­

Emacs¤Ç¤Ï¡¢¤µ¤Þ¤¶¤Þ¤Ê´Ø¿ô¤ò²ð¤·¤Æ ¥ª¥Ú¥ì¡¼¥Æ¥£¥ó¥°¥·¥¹¥Æ¥à´Ä¶­¤ÎÊÑ¿ô¤ò»²¾È¤Ç¤­¤Þ¤¹¡£ ¤³¤ì¤é¤ÎÊÑ¿ô¤Ë¤Ï¡¢¥·¥¹¥Æ¥à¤Î̾Á°¡¢¥æ¡¼¥¶¡¼¤Î¼±ÊÌÈÖ¹æUID¤Ê¤É¤¬ ´Þ¤Þ¤ì¤Þ¤¹¡£

Variable: system-configuration

¤³¤ÎÊÑ¿ô¤Ï¡¢ÆÉ¼Ô¤Î¥·¥¹¥Æ¥à¤Î¥Ï¡¼¥É¥¦¥§¥¢¡¿¥½¥Õ¥È¥¦¥§¥¢¹½À®¤ËÂФ¹¤ë GNU¤Î¹½À®Ì¾¤òʸ»úÎó¤ÇÊÝ»ý¤·¤Æ¤¤¤ë¡£ ¤³¤Îʸ»úÎó¤Î°ìÉôʬ¤ò¸¡ºº¤¹¤ë´ÊÊØ¤ÊÊýË¡¤Ï string-match¤ò»È¤¦¤³¤È¤Ç¤¢¤ë¡£

Variable: system-type

¤³¤ÎÊÑ¿ô¤ÎÃͤϡ¢Emacs¤¬Æ°ºî¤·¤Æ¤¤¤ë ¥ª¥Ú¥ì¡¼¥Æ¥£¥ó¥°¥·¥¹¥Æ¥à¤Î¼ïÎà¤òɽ¤¹¥·¥ó¥Ü¥ë¤Ç¤¢¤ë¡£ ¤Ä¤®¤Ë²Äǽ¤ÊÃͤΰìÍ÷¤ò¼¨¤¹¡£

alpha-vms

Alpha¥Þ¥·¥ó¾å¤ÎVMS¡£

aix-v3

AIX¡£

berkeley-unix

¥Ð¡¼¥¯¥ì¡¼BSD¡£

dgux

¥Ç¡¼¥¿¥¸¥§¥Í¥é¥ëDGUX¥ª¥Ú¥ì¡¼¥Æ¥£¥ó¥°¥·¥¹¥Æ¥à¡£

gnu

¡ÊHURD¤«Mach¤«¤éÀ®¤ëGNU¥«¡¼¥Í¥ë¤ò»È¤Ã¤Æ¤¤¤ë¡ËGNU¥·¥¹¥Æ¥à¡£

gnu/linux

GNU/Linux¥·¥¹¥Æ¥à¡£ ¤Ä¤Þ¤ê¡¢Linux¥«¡¼¥Í¥ë¤òÍѤ¤¤¿GNU¥·¥¹¥Æ¥à¤ÎÊѼ ¡Ê¤³¤ì¤é¤Î¥·¥¹¥Æ¥à¤Ï¿Í¡¹¤¬¡ØLinux¡Ù¤È¸Æ¤Ö¤â¤Î¤Î1¤Ä¤Ç¤¢¤ë¤¬¡¢ Linxu¤Ï¼ÂºÝ¤Ë¤Ï¥«¡¼¥Í¥ë¤Î¤ß¤Ç¤¢¤ê¡¢¥·¥¹¥Æ¥àÁ´ÂΤǤϤʤ¤¡£¡Ë

hpux

¥Ò¥å¡¼¥ì¥Ã¥È¥Ñ¥Ã¥«¡¼¥ÉHPUX¥ª¥Ú¥ì¡¼¥Æ¥£¥ó¥°¥·¥¹¥Æ¥à¡£

irix

¥·¥ê¥³¥ó¥°¥é¥Õ¥£¥Ã¥¯¥¹Irix¥·¥¹¥Æ¥à¡£

ms-dos

¥Þ¥¤¥¯¥í¥½¥Õ¥ÈMS-DOS¡Ø¥ª¥Ú¥ì¡¼¥Æ¥£¥ó¥°¥·¥¹¥Æ¥à¡Ù¡£

next-mach

NeXT¤ÎMach¥Ù¡¼¥¹¤Î¥·¥¹¥Æ¥à¡£

rtu

¥Þ¥¹¥³¥ó¥×RTU¡¢UCB¥æ¥Ë¥Ð¡¼¥¹¡£

unisoft-unix

¥æ¥Ë¥½¥Õ¥ÈUniPlus¡£

usg-unix-v

AT&T System V¡£

vax-vms

VAX VMS¡£

windows-nt

¥Þ¥¤¥¯¥í¥½¥Õ¥ÈWindows NT¡£

xenix

SCO Xenix 386¡£

ÀäÂФËɬÍפǤʤ¤¸Â¤ê¡¢ºÙʬÎà¤Î¤¿¤á¤Ë¿·¤¿¤Ê¥·¥ó¥Ü¥ë¤òÄɲä·¤¿¤¯¤Ê¤¤¡ª ¼ÂºÝ¡¢¾­Íè¤Ë¤Ï¤³¤ì¤é¤Î¤¤¤¯¤Ä¤«¤òºï½ü¤¹¤ë¤³¤È¤ò´ê¤Ã¤Æ¤¤¤ë¡£ ¥ª¥Ú¥ì¡¼¥Æ¥£¥ó¥°¥·¥¹¥Æ¥à¤Î°ã¤¤¤ò¶èÊ̤¹¤ë¤Ë¤Ï¡¢ system-configuration¤ò»È¤¦¤³¤È¤ò´«¤á¤ë¡£

Function: system-name

¤³¤Î´Ø¿ô¤ÏÆÉ¼Ô¤¬»È¤Ã¤Æ¤¤¤ë¥Þ¥·¥ó¤Î̾Á°¤òÊÖ¤¹¡£

(system-name)
     ⇒ "www.gnu.org"

¥·¥ó¥Ü¥ësystem-name¤Ï¡¢´Ø¿ô¤È¤·¤Æ¤âÊÑ¿ô¤È¤·¤Æ¤â»È¤¨¤Þ¤¹¡£ ¼ÂºÝ¡¢´Ø¿ô¤È¤·¤Æ¤Ï¡¢ÊÑ¿ôsystem-name¤¬¸½ºßÊÝ»ý¤·¤Æ¤¤¤ëÃͤòÊÖ¤·¤Þ¤¹¡£ ¤·¤¿¤¬¤Ã¤Æ¡¢Emacs¤¬ÆÉ¼Ô¤Î¥·¥¹¥Æ¥à̾¤Ë´Ø¤·¤Æº®Í𤷤Ƥ¤¤ë¾ì¹ç¤Ë¤Ï¡¢ ÊÑ¿ôsystem-name¤ËÀßÄê¤Ç¤­¤Þ¤¹¡£ ÊÑ¿ô¤Ï¥Õ¥ì¡¼¥à¥¿¥¤¥È¥ë¤ÎºîÀ®¤Ë¤âÍ­ÍѤǤ¹¡Êsee Frame Titles¡Ë¡£

Variable: mail-host-address

¤³¤ÎÊÑ¿ô¤¬nil°Ê³°¤Ç¤¢¤ë¤È¡¢system-name¤Î¤«¤ï¤ê¤Ë ÅŻҥᥤ¥ë¥¢¥É¥ì¥¹¤ÎÀ¸À®¤Ë»È¤ï¤ì¤ë¡£ ¤¿¤È¤¨¤Ð¡¢user-mail-address¤Î¥Ç¥Õ¥©¥ë¥ÈÃͤκîÀ®¤Ë»È¤ï¤ì¤ë¡£ see User Identification¡£ ¡Ê¤³¤ì¤ÏEmacs¤Î»Ïư»þ¤Ë¹Ô¤ï¤ì¤ë¤¿¤á¡¢ Emacs¤ò¥À¥ó¥×¤·¤¿¤È¤­¤ÎÃͤ¬¼ÂºÝ¤Ë»È¤ï¤ì¤ëÃͤǤ¢¤ë¡£ see Building Emacs¡Ë¡£

Function: getenv var

¤³¤Î´Ø¿ô¤Ï¡¢´Ä¶­ÊÑ¿ôvar¤ÎÃͤòʸ»úÎó¤ÇÊÖ¤¹¡£ EmacsÆâÉô¤Ç¤Ï¡¢´Ä¶­ÊÑ¿ô¤ÎÃͤÏLispÊÑ¿ôprocess-environment¤Ë ÊÝ»ý¤µ¤ì¤Æ¤¤¤ë¡£

(getenv "USER")
     ⇒ "lewis"
lewis@slug[10] % printenv
PATH=.:/user/lewis/bin:/usr/bin:/usr/local/bin
USER=lewis
TERM=ibmapa16
SHELL=/bin/csh
HOME=/user/lewis
¥³¥Þ¥ó¥É: setenv variable value

¤³¤Î¥³¥Þ¥ó¥É¤Ï¡¢´Ä¶­ÊÑ¿ôvariable¤ËÃÍvalue¤òÀßÄꤹ¤ë¡£ ¤É¤Á¤é¤Î°ú¿ô¤âʸ»úÎó¤Ç¤¢¤ë¡£ ¤³¤Î´Ø¿ô¤Ïprocess-environment¤ò½¤Àµ¤¹¤ë¤³¤È¤Çưºî¤¹¤ë¡£ ¤³¤ÎÊÑ¿ô¤òlet¤Ç«Çû¤·¤Æ¤â½½Ê¬¤Ë¼ÂÍÑŪ¤Ç¤¢¤ë¡£

Variable: process-environment

¤³¤ÎÊÑ¿ô¤Ï¡¢³ÆÍ×ÁǤ¬1¤Ä¤Î´Ä¶­ÊÑ¿ô¤òµ­½Ò¤¹¤ëʸ»úÎó¤Î¥ê¥¹¥È¤Ç¤¢¤ë¡£ ´Ø¿ôgetenv¤Èsetenv¤Ï¡¢¤³¤ÎÊÑ¿ô¤òÍѤ¤¤ÆÆ°ºî¤¹¤ë¡£

process-environment
⇒ ("l=/usr/stanford/lib/gnuemacs/lisp"
    "PATH=.:/user/lewis/bin:/usr/class:/nfsusr/local/bin"
    "USER=lewis" 
    "TERM=ibmapa16" 
    "SHELL=/bin/csh"
    "HOME=/user/lewis")
Variable: path-separator

¤³¤ÎÊÑ¿ô¤Ï¡¢¡Ê´Ä¶­ÊÑ¿ô¤Ê¤É¤Ç¡Ëõº÷¥Ñ¥¹¤ò ¶èÀÚ¤ëʸ»ú¤ò»ØÄꤹ¤ëʸ»úÎó¤òÊÝ»ý¤¹¤ë¡£ UNIX¤ÈGNU¥·¥¹¥Æ¥à¤Ç¤Ï¤½¤ÎÃͤÏ":"¤Ç¤¢¤ê¡¢ MS-DOS¤ÈWidows NT¤Ç¤Ï";"¤Ç¤¢¤ë¡£

Variable: invocation-name

¤³¤ÎÊÑ¿ô¤Ï¡¢µ¯Æ°¤·¤¿Emacs¤Î¥×¥í¥°¥é¥à̾¤òÊÝ»ý¤¹¤ë¡£ ÃͤÏʸ»úÎó¤Ç¤¢¤ê¡¢¥Ç¥£¥ì¥¯¥È¥ê̾¤Ï´Þ¤Þ¤Ê¤¤¡£

Variable: invocation-directory

¤³¤ÎÊÑ¿ô¤Ï¡¢µ¯Æ°¤·¤¿Emacs¤Î¼Â¹Ô·Á¼°¤Î¥Ç¥£¥ì¥¯¥È¥ê¤òÊÝ»ý¤¹¤ë¡£ ¥Ç¥£¥ì¥¯¥È¥ê¤òȽÊ̤Ǥ­¤Ê¤¤¾ì¹ç¤Ë¤Ïnil¤Ç¤¢¤ë¡£

Variable: installation-directory

nil°Ê³°¤Ç¤¢¤ë¤È¡¢¥µ¥Ö¥Ç¥£¥ì¥¯¥È¥êlib-src¤Èetc¤ò õ¤¹¤¿¤á¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Ç¤¢¤ë¡£ Emacs¤¬¤³¤ì¤é¤Î¥Ç¥£¥ì¥¯¥È¥ê¤òɸ½à¤Î¥¤¥ó¥¹¥È¡¼¥ë¥Ç¥£¥ì¥¯¥È¥ê¤Ç ¤ß¤Ä¤±¤é¤ì¤Ê¤¯¤Æ¤âEmacs¤Î¼Â¹Ô·Á¼°¤Ë¤Ê¤ó¤é¤«¤Î°ÕÌ£¤Ç ´ØÏ¢¤¹¤ë¥Ç¥£¥ì¥¯¥È¥ê¤Ç¤ß¤Ä¤±¤é¤ì¤ì¤Ð¡¢nil°Ê³°¤Ç¤¢¤ë¡£

Function: load-average &optional use-float

¤³¤Î´Ø¿ô¤Ï¡¢1ʬ´Ö¡¿5ʬ´Ö¡¿15ʬ´Ö¤Î¥í¡¼¥É¥¢¥Ù¥ì¥Ã¥¸ ¡ÊÉé²ÙÊ¿¶Ñ¡Ë¤ò¥ê¥¹¥È¤ÇÊÖ¤¹¡£

¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï¡¢¤³¤ì¤é¤ÎÃͤϡ¢Æ°ºî¤·¤è¤¦¤È¤·¤Æ¤ë¥×¥í¥»¥¹¤ÎÊ¿¶Ñ¸Ä¿ô¤òɽ¤¹ ¥·¥¹¥Æ¥à¤Î¥í¡¼¥É¥¢¥Ù¥ì¥Ã¥¸¤ò100Çܤ·¤¿À°¿ô¤Ç¤¢¤ë¡£ use-float¤¬nil°Ê³°¤Ç¤¢¤ë¤È¡¢ 100Çܤ·¤Ê¤¤ÉâÆ°¾®¿ôÅÀ¿ô¤ÇÊÖ¤¹¡£

(load-average)
     ⇒ (169 48 36)
(load-average t)
     ⇒ (1.69 0.48 0.36)
lewis@rocky[5] % uptime
 11:55am  up 1 day, 19:37,  3 users,
 load average: 1.69, 0.48, 0.36
Function: emacs-pid

¤³¤Î´Ø¿ô¤Ï¡¢Emacs¥×¥í¥»¥¹¤Î¥×¥í¥»¥¹ÈÖ¹æID¤òÊÖ¤¹¡£

Variable: tty-erase-char

¤³¤ÎÊÑ¿ô¤Ï¡¢Emacs¤¬»Ïư¤¹¤ë¤Þ¤¨¤Ë ¥·¥¹¥Æ¥à¤ÎüËö¥É¥é¥¤¥Ð¤¬Áª¤ó¤Ç¤¤¤¿¾Ãµîʸ»ú¤òÊÝ»ý¤¹¤ë¡£

Function: setprv privilege-name &optional setp getprv

¤³¤Î´Ø¿ô¤Ï¡¢¡ÊUNIX¾å¤Ë¤Ï¸ºß¤·¤Ê¤¤¡ËVMS´ðËÜÁàºî¤òÀßÄê¡¿ºÆÀßÄꤹ¤ë¡£ ºÇ½é¤Î°ú¿ô¤Ïʸ»úÎó¤Çɽ¤·¤¿´ðËÜÁàºî¤Î̾Á°¤Ç¤¢¤ë¡£ Âè2°ú¿ôsetp¤Ït¤«nil¤Ç¤¢¤ê¡¢ ´ðËÜÁàºî¤ò¥ª¥ó¤Ë¤¹¤ë¤«¥ª¥Õ¤Ë¤¹¤ë¤«¤òɽ¤¹¡£ ¥Ç¥Õ¥©¥ë¥È¤Ïnil¤Ç¤¢¤ë¡£ ´Ø¿ô¤Ï¡¢À®¸ù¤¹¤ì¤Ðt¤òÊÖ¤·¡¢¤µ¤â¤Ê¤±¤ì¤Ðnil¤òÊÖ¤¹¡£

Âè3°ú¿ôgetprv¤¬nil°Ê³°¤Ç¤¢¤ë¤È¡¢ setprv¤Ï´ðËÜÁàºî¤òÊѹ¹¤·¤Ê¤¤¤¬¡¢ ¤½¤Î´ðËÜÁàºî¤¬¸½ºß¥ª¥ó¤Ç¤¢¤ë¤«¥ª¥Õ¤Ç¤¢¤ë¤«¤òɽ¤¹ t¤«nil¤òÊÖ¤¹¡£


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