Provided by: apt-cacher-ng_3.7.4-1ubuntu5_amd64 bug

NAME

       apt-cacher-ng - caching proxy for software package downloads

SYNOPSIS

       apt-cacher-ng [-c confdir] [-h] [optname=optvalue ...]

DESCRIPTION

       Apt-Cacher  NG  is  a  caching  proxy  for  software  packages  which are downloaded by Unix/Linux system
       distribution mechanisms from mirror servers accessible via HTTP.

OPTIONS

       The command-line options supported by apt-cacher-ng are:

       -c confdir
              Scan the specified configuration directory and interpret configuration files found there.

       -h     Short option summary

       -i     Ignore some non-critical configuration errors on startup. Regular operation with  this  switch  is
              not recommended.

       -v     Enable additional verbosity in log output.

       -e     Invoke  expiration task immediately after startup. This option exists for legacy compatibility and
              can be dangerous to use due to filesystem permission issues (i.e. danger  to  cause  them).  Using
              acngtool to control such operations instead is advisable.

       varname=varopt
              The options from the configuration can be passed on the command line as key=value pairs.

CONFIGURATION

       Apt-Cacher  NG  is  configured  by  a  multi-config  directory, i.e. the configuration is split into many
       configuration files having names with suffix .conf and  stored  in  a  single  directory.  Variables  can
       override  previously configured settings from other files, sometimes those settings are merged (depending
       on the variable).

       The configuration directory is typically /etc/apt-cacher-ng but it can be adjusted  with  the  -c  option
       (see systemd service file for details or wherever the init system starts the daemon).

       On  Debian systems, there are at least three files installed by default: acng.conf (containing documented
       examples),  security.conf  (containing  sensible  data  and  only  readable  for   special   users)   and
       zz_debconf.conf (containing popular settings which are set by the Debian Configuration mechanism).

SIGNALS

       Only few signals are handled in non-default ways.

       SIGUSR1 closes and reopens log files.

       SIGTERM and SIGINT close log files and stop the daemon.

MORE INFORMATION

       For  more  information  on  Apt-Cacher  NG, read the User Manual which can be found either in the doc/pdf
       directory of the software source package or installed in the documentation directory of apt-cacher-ng  by
       your distribution.