----新建用户
# useradd -d /home/attachmentUser -g oinstall -G dba -s /sbin/sh attachmentUser
Login 'attachmentUser' is invalid
# useradd -d /home/ss10 -g oinstall -G dba -s /sbin/sh ss10
# passwd ss10
Changing password for ss10
New password:
Re-enter new password:
Passwd successfully changed
Login 'attachmentUser' is invalid
# useradd -d /home/ss10 -g oinstall -G dba -s /sbin/sh ss10
# passwd ss10
Changing password for ss10
New password:
Re-enter new password:
Passwd successfully changed