我在/etc/raddb/server中有一个半径客户端配置文件，该文件想要在没有注释的行的情况下获得有效的IP地址，所以我使用
grep -o '[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}' /etc/raddb/server
127.0.0.1
192.168.0.147
，但我想忽略127.0.0.1，它评论了＃如何做这些事情？
/etc/raddb/服务器文件如下
cat /etc/raddb/server
# pam_radius_auth configuration file. Copy to: /etc/raddb/server
#
# For proper security, this file SHOULD have permissions 0600,
# that is readable by root, and NO ONE else. If anyone other than
# root can read this file, then they can spoof responses from the server!
#
# There are 3 fields per line in this file. There may be multiple
# lines. Blank lines or lines beginning with '#' are treated as
# comments, and are ignored. The fields are:
#
# server[:port] secret [timeout]
#
# the port name or number is optional. The default port name is
# "radius", and is looked up from /etc/services The timeout field is
# optional. The default timeout is 3 seconds.
#
# If multiple RADIUS server lines exist, they are tried in order. The
# first server to return success or failure causes the module to return
# success or failure. Only if a server fails to response is it skipped,
# and the next server in turn is used.
#
# The timeout field controls how many seconds the module waits before
# deciding that the server has failed to respond.
#
# server[:port] shared_secret timeout (s)
#127.0.0.1 secret 1
#other-server other-secret 3
192.168.0.147:1812 testing123 1
#
# having localhost in your radius configuration is a Good Thing.
#
# See the INSTALL file for pam.conf hints.
尝试grep -o '^[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}' /etc/raddb/server