假设从网上下载了一个软件包myprog-3.0.tar.gz，存放在目录/root/rpm中，如何安装该软件包？完成安装后，如果又不想要它了，如何卸载或删除该软件包？请分别写出安装和删除该软件包的步骤和命令。

A.ARP

B.NFS

C.DHCP

D.DDNS

A.The X session file

B.The X setup_0 file

C.The X start_up file

D.The Give Console file

A.xinit

B.xinitrc

C.XF86 Setup

D.XF86 Config

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A./etc/aliases

B./etc/mailaliases

C./etc/sendmail.aliases

D./etc/sendmail/aliases

A./etc/exports

B./etc/smb.conf

C./etc/samba/config

D./usr/local/samba.cfg

A.once a day from cron

B.once a week from cron

C.after installing a new kernel

D.after installing a new module

A.ping

B.init

C.telnet

D.netstat

A.echo$HOME

B.echo$USERDIR

C.echo$ECHO

D.echo$ENV

A.adduser-u:200-g:1000-h:/home/user01user01

B.adduser-u=200-g=1000-d=/home/user01user01

C.useradd-u200-g1000-d/home/user01user01

D.useradd-u200-g1000-h/home/user01user01

A.普通文件

B.硬连接

C.目录

D.符号连接