指针(4)
2026/6/20 4:35:17
1)user1 家目录在/data,描述为testuser
userdel-ruser12>/dev/nulluseradd-d/data/user1-c"testuser"user12)user2 UID为2000
userdel-ruser22>/dev/nulluseradd-u2000user23)user3 使用/sbin/nologin shell
userdel-ruser32>/dev/nulluseradd-s/sbin/nologin user3groupdelit2>/dev/nullgroupadd-g3000itusermod-aGit user1usermod-aGit user2usermod-aGit user3mkdir-p/itchownroot:it /itchmod775/itgroupmod-ncloud ituserdel-rituser12>/dev/nulluserdel-rituser22>/dev/nulluseraddituser1useraddituser2mkdir-p/data/itusersusermod-d/data/itusers-mituser1# 创建文件touch/tmp/rhcsa# 加入组gpasswd-aituser1 cloud gpasswd-aituser2 cloud# 改归属chownituser1:cloud /tmp/rhcsa# 赋权:属主rw,组rwx,其他无chmod670/tmp/rhcsagpasswd cloud(执行后按提示输入组密码即可)
mkdir-p-m764/tmp/redhat/rhel9mkdir-p/tmp/centos/basechown-Ruser1:user2 /tmp/centosgroupdelgroup12>/dev/nullgroupadd-g2100group1mkdir-p/tmp/group1chgrpgroup1 /tmp/group1mkdir-p/home/user1/user1chmod-R600/home/user1/user1mkdir-p/tmp/demochmod--reference=/home/user1/user1 /tmp/demofind/-nameselinux2>~/err.txt1>~/ok.txtecho"redhat"|passwd--stdinuser1