apt-cache show를 실행한 후 어떻게 알 수 있나요?`, 이 패키지는 `sources.list`의 어느 저장소에 해당합니까?

apt-cache show <package>실행 후 해당 필드가 어떤 저장소 에 해당하는지 어떻게 알 수 있나요?sources.list<package>Filename:

이 경우에는 저장소가 거의 없으므로 모든 저장소에 대한 경로를 앞에 추가 sources.list하고 작동하는지 확인할 수 있습니다.pool/main/c/cntlm/cntlm_0.92.3-1+b1_amd64.deb

하지만 리포지토리가 많은 경우 sources.list패키지가 어느 리포지토리에 있는지 어떻게 알 수 있나요?

apt-cache show cntlm:

parallels@debian-gnu-linux-vm:~$ apt-cache show cntlm
Package: cntlm
Source: cntlm (0.92.3-1)
Version: 0.92.3-1+b1
Installed-Size: 149
Maintainer: David Watson <[email protected]>
Architecture: amd64
Replaces: ntlmaps
Depends: adduser, libc6 (>= 2.14)
Description-en: Fast NTLM authentication proxy with tunneling
 Cntlm is a fast and efficient NTLM proxy, with support for TCP/IP tunneling,
 authenticated connection caching, ACLs, proper daemon logging and behaviour
 and much more. It has up to ten times faster responses than similar NTLM
 proxies, while using by orders or magnitude less RAM and CPU. Manual page
 contains detailed information.
Description-md5: a09ce14efcc2b3cdd95e19cd49ef5d70
Homepage: http://cntlm.sourceforge.net/
Tag: role::program, security::authentication, use::proxying
Section: net
Priority: optional
Filename: pool/main/c/cntlm/cntlm_0.92.3-1+b1_amd64.deb
Size: 64240
MD5sum: a32eae32fd459e472caf1e47330af6d9
SHA256: c0a10c545d42dacea0b6d4ebf7c088a1178e708083fd2e32f2c277dcc17f69f0

/etc/apt/sources.list:

parallels@debian-gnu-linux-vm:~$ cat /etc/apt/sources.list
# 

# deb cdrom:[Debian GNU/Linux 9.1.0 _Stretch_ - Official amd64 DVD Binary-1 20170722-11:31]/ stretch contrib main

deb http://ftp.us.debian.org/debian/ stretch main
deb-src http://ftp.us.debian.org/debian/ stretch main

deb http://security.debian.org/debian-security stretch/updates main contrib
deb-src http://security.debian.org/debian-security stretch/updates main contrib

# stretch-updates, previously known as 'volatile'
deb http://ftp.us.debian.org/debian/ stretch-updates main contrib
deb-src http://ftp.us.debian.org/debian/ stretch-updates main contrib

# docker
deb [arch=amd64] https://download.docker.com/linux/debian stretch stable