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Date: Fri, 22 May 1998 01:04:35 +0900
From: Hirohisa Mizuta <mizuta@bme.ei.hosei.ac.jp>
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Subject: [FreeBSD-users-jp 28538] What is su?
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$B?eED!wK!@/Bg$G$9!#(B

$B0J2<$N$h$&$J!"$*$^$1$N(B QandA $B$r9M$($^$7$?!#(B
$B!t(B [FreeBSD-users-jp 28534] su $B$H$O4X78$"$j$^$;$s!#G0$N$?$a!#(B:-)
--------------------------------------------------------------------------
A. $B!V(Bsu $B$7$F!W$H$$$C$?$i!VC/$K(B?$B!W$H?V$+$l$^$7$?!#$I$&$$$&$3$H$G$7$g$&(B?

Q. su(1) $B$H$$$&%3%^%s%I$O!"0l;~E*$KB>$N%f!<%6$K$J$j$+$o$k$H$$$&$b$N$G$9!#(B
(su - substitute user identity)
$B%G%U%)%k%H$N%f!<%6$,(B root($B%9!<%Q!<%f!<%6(B)$B$K$J$C$F$$$k;v$+$i(B
$B!V(Bsu $B$9$k!W$J$I$N8@$$2s$7$,!V(Broot $B$K$J$k!W$H$$$&0UL#$G;H$o$l$k;v$,(B
$BB?$$$G$9$,!"!V(Bsu = $B%9!<%Q!<%f!<%6(B($B$K$J$k(B)$B!W$G$O$J$$$3$H$KCm0U$7$^$7$g$&!#(B

$B!V(Bsu $B$7$F(B root $B$K$J$C$?!W>l9g$H!"!V(Broot $B$G%m%0%$%s$7$?!W>l9g$H$G$O(B
$B4D6-JQ?t$K0c$$$,@8$8$^$9!#<ALd$J$I$G<+J,$N$7$?A`:n$r@bL@$9$k;~$O(B
$B$I$A$i$N<j=g$rMQ$$$?$+L@5-$9$k$Y$-$G$9!#(B
$B>\$7$$;v$O!"(Bman su $B$7$F8+$F2<$5$$!#(B
--------------------------------------------------------------------------
$B@N!";d$O(B switch user $B$@$H65$o$C$?$N$G$9$,(B

FreeBSD
  su - substitute user identity
  su - $B0l;~E*$KB>$N%f!<%6$K$J$j$+$o$k(B
SunOS 4.1.3
  su - super-user, temporarily switch to a new user ID
SunOS 5.5.1
  su - $B%9!<%Q!<%f!<%6$^$?$OJL$N%f!<%6$KJQ?H(B

$B$H$$$&$3$H$G!"$3$NJU$N2r<a$K$O!"2?$+EAE}E*$J5DO@$,$"$k$H$+(B
$B$$$m$$$m$"$k$s$8$c$J$$$+$H;W$($FMh$^$7$?!#(B
$B$A$g$C$H(B FreeBSD $B8GM-$NLdBj$8$c$J$$$N$G$9$,!D(B
