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°Ñ×Ô¼º³£ÓõÄһЩlinuxÃüÁî¼Ç¼ÏÂÀ´
1. ²é¿´µ±Ç°Óû§ºÍ×é
less /etc/passwd
less /etc/group  »òÕß  groups ²é¿´×é
    ÓÐÈË˵ÓÃÉÏÃæÄÇÁ½¸öÃüÁîµÃµ½µÄ½á¹û²»ÍêÈ«£¬Ò»Ð©ÌØÊⷽʽ½¨Á¢µÄ¾Í¿´²»µ½ÁË£¬¿É¸ÄÓÃ
getent passwd
getent group 
2. ¸Ä±äÎļþµÄËùÓÐÕߺÍËùÊô×é
chown baoniu a.txt ¸Ä±äÎļþµÄËùÓÐÕß
chgrp baoniu a.txt ÃüÁîÀ´ÐÞ¸ÄÎļþËùÊôÓû§×é
3. Ìí¼ÓÓû§ºÍ×é
groupadd  supergroup
/usr/sbin/groupadd supergroup
useradd -g supergroup -n user1
usermod -g supergroup baoniu //Ìí¼ÓÒÑ´æÔÚÓû§µ½×é
sudo /usr/sbin/adduser -m -G users -s /bin/bash baoniu 
sudo passwd baoniu
4. Ìí¼ÓrootÓû§
useradd -u 0 -o -g 0 youname 
    ÒÔÉÏÃüÁîÊǽ¨Ò»ºÍrootȨÏÞÒ»ÑùµÄÕʺÅyouname: 
-u 0 ¾ÍÊǽ¨Ò»¸öuid=0µÄÕʺŠ
-o (×¢ÒâÊÇ×Öĸo£¬²»ÊÇÊý×Ö0)¾ÍÊÇÔÊÐíʹÓÃÖØ¸´µÄidºÅ 
-g 0 ¾ÍÊǽ¨Ò»¸ögid=0µÄÕʺŠ
youname¾ÍÊÇÄ㽨µÄÕʺÅÃû.
5. Çл»µ½rootÓû§µÄ·½·¨
su root
su -
su
6. ´´½¨¾ßÓÐsudoȨÏÞµÄÓû§ºÍ×é
1£¬ÐèÒªÓÃÒ»¸öÒÑÓÐsudoȨÏÞµÄÕ˺ŵǼ
2£¬Óû§Ä¿Â¼Ï£¬vim .bash_profile, ÐÞ¸Ä.bash_profile,Ôö¼ÓPATH£¬±£Ö¤sudoµÄʱºò¿ÉÒÔÕÒµ½useraddµÈÃüÁîPATH=$PATH:$HOME/bin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/usr/local/sbin;
3£¬source .bash_profile
4£¬sudo useradd username
5£¬sudo passwd username
6£¬sudo visudo -f /etc/sudoers
Ôö¼ÓÒ»ÐУº
username    ALL=(ALL) ALL


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# cd /usr/src/mysql-5.0.45
# ./configure --prefix=/usr/local/mysql --with-charset=gbk
--localstatedir=/usr/local/mysql/data
# make
# make install
# groupadd mysql
# useradd mysql -g mysql
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