1.查看安装的所有软件
dpkg -l
例如:dpkg -l | grep ftp
<span style="font-size:18px;">:~$ dpkg -l | grep ftp ii ftp 0.17-28 i386 classical file transfer client </span>
2.查看软件安装的路径
dpkg -L | grep ftp
<span style="font-size:18px;">:~$ dpkg -L ftp /. /usr /usr/bin /usr/bin/netkit-ftp /usr/share /usr/share/doc /usr/share/doc/ftp /usr/share/doc/ftp/BUGS /usr/share/doc/ftp/copyright /usr/share/doc/ftp/README.Debian /usr/share/doc/ftp/changelog.Debian.gz /usr/share/man /usr/share/man/man1 /usr/share/man/man1/netkit-ftp.1.gz /usr/share/man/man5 /usr/share/man/man5/netrc.5.gz /usr/bin/pftp /usr/share/man/man1/pftp.1.gz </span>
也可以用 whereis ftp
3.查看软件版本
aptitude show
例如:aptitude show ftp