APT::Authentication::TrustCDROM "true";
Acquire::http::Proxy "http://username:password@proxy.xxx.xxx/";
Acquire::::Proxy "true";

proxy-user=username
proxy-password=password

# proxychains.conf  VER 2.0
#
#        HTTP, SOCKS4, SOCKS5 tunneling proxifier.
#

# The option below identifies how the ProxyList is treated.
# only one option should be uncommented at time,
# otherwise the last appearing option will be accepted
#
# Dynamic - Each connection will be done via chained proxies
# all proxies chained in the order as they appear in the list
# at least one proxy must be online to play in chain
# (dead proxies are skipped)
# otherwise EINTR is returned to the app
#
# Strict - Each connection will be done via chained proxies
# all proxies chained in the order as they appear in the list
# all proxies must be online to play in chain
# otherwise EINTR is returned to the app
#
# Random - Each connection will be done via random proxy
# (or proxy chain, see  chain_len) from the list
# this option is good for scans

#dynamic_chain
#strict_chain
random_chain

# Make sense only if random_chain
# 一定要注意，这个值要和下面定义的 proxy list 的个数一致
chain_len = 1

# Quiet mode (no output)
quiet_mode

# Write stats about good proxies to proxychains.stats
#write_stats

#Some timeouts in milliseconds
#
tcp_read_time_out 15000
tcp_connect_time_out 10000

[ProxyList]
# ProxyList format
#       type  host  port [user pass]
#       (values separated by 'tab' or 'blank')
#
#
#        Examples:
#
#                socks5    192.168.67.78    1080    lamer  secret
#        http    192.168.89.3    8080    justu    hidden
#         socks4    192.168.1.49    1080
#            http    192.168.39.93    8080    
#        
#
#       proxy types: http, socks4, socks5
#        ( auth types supported: "basic"-http  "user/pass"-socks )
#
#http     10.0.0.5 3128
#http     10.0.0.3 3128
#http     10.0.0.5 3128
#socks5 192.168.1.4 1080
#socks4 10.5.81.143 1080
#http    192.168.203.18 8080

http                proxy.xxx.xxx   80  username  password