squid man page on Oracle

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squid(8)							      squid(8)

       squid - HTTP web proxy caching server

       squid [-dhisrvzCFNRSVYX] [-l facility ] [-f config-file ] [-[au] port ]
       [-k signal ] [-n service-name ] [-O command-line ]

       squid is a high-performance proxy caching server for web clients,  sup‐
       porting	FTP,  gopher,  ICAP,  ICP, HTCP and HTTP data objects.	Unlike
       traditional caching software, Squid handles all requests in  a  single,
       non-blocking process.

       Squid  keeps meta data and especially hot objects cached in RAM, caches
       DNS lookups, supports non-blocking DNS lookups, and implements negative
       caching of failed requests.

       Squid  supports	SSL,  extensive access controls, and full request log‐
       ging.  By using the lightweight Internet Cache Protocols ICP,  HTCP  or
       CARP,  Squid  caches  can  be arranged in a hierarchy or mesh for addi‐
       tional bandwidth savings.

       Squid consists of a main server program squid , some optional  programs
       for  custom  processing	and  authentication,  and  some management and
       client tools.  When squid starts up, it spawns a configurable number of
       helper  processes,  each	 of  which can perform parallel lookups.  This
       reduces the amount of time the cache waits for results.

       Squid is derived from the ARPA-funded Harvest Project.

       This manual page only lists the command line arguments.	For details on
       how  to	configure Squid see the file /etc/squid/squid.conf.documented,
       the Squid wiki FAQ and examples at  http://wiki.squid-cache.org/	 ,  or
       the  configuration  manual  on  the  Squid  home page http://www.squid-

       -a port	   Specify HTTP port number  where  Squid  should  listen  for
		   requests,  in  addition  to any http_port specifications in

       -C	   Do not catch fatal signals.

       -d level	   Write debugging to stderr also.

       -f file	   Use the given config-file instead of	 /etc/squid/squid.conf
		   .   If  the	file  name  starts  with  a !  or | then it is
		   assumed to be an external command or command line.  Can for
		   example  be used to pre-process the configuration before it
		   is being read by Squid.   To	 facilitate  this  Squid  also
		   understands	the  common  #line notion to indicate the real
		   source file.

       -F	   Don't serve any requests until store is rebuilt.

       -h	   Print help message.

       -i	   Install as a Windows Service (see -n option).

       -k reconfigure | rotate | shutdown | interrupt | kill | debug | check |
		   Parse  configuration file, then send signal to running copy
		   (except -k parse ) and exit.

       -l facility Use specified syslog facility. Implies -s

       -n name	   Specify Windows Service name to use for service operations,
		   default is: Squid

       -N	   No daemon mode.

       -O options  Set Windows Service Command line options in Registry.

       -r	   Remove a Windows Service (see -n option).

       -R	   Do not set REUSEADDR on port.

       -s	   Enable    logging   to   syslog.   Also   configurable   in

       -S	   Double-check swap during rebuild.

       -u port	   Specify ICP port number (default: 3130), disable with 0.

       -v	   Print version and build details.

       -X	   Force full debugging.

       -Y	   Only return UDP_HIT or UDP_MISS_NOFETCH during fast reload.

       -z	   Create missing swap directories and other missing cache_dir
		   structures,	then exit. All cache_dir types create the con‐
		   figured top-level directory if it is missing. Other actions
		   are	type-specific.	For example, ufs-based storage systems
		   create missing L1 and L2 directories while Rock creates the
		   missing database file.

		   This	 option does not enable validation of any present swap
		   structures. Its focus is on creation of missing pieces.  If
		   nothing  is	missing,  squid	 -z just exits. If you suspect
		   cache_dir  corruption,  you	must  delete   the   top-level
		   cache_dir directory before running squid -z.

		   By  default, squid -z runs in daemon mode (so that configu‐
		   ration macros and other SMP features work as expected). Use
		   -N option to overwrite this.

       Squid configuration files located in /etc/squid/:

	      The  main configuration file. You must initially make changes to
	      this file for squid to work. For example, the default configura‐
	      tion  only  allows  access  from RFC private LAN networks.  Some
	      packaging distributions block even that.

	      Reference copy of the configuration file. Always kept up to date
	      with the version of Squid you are using.

	      Use  this to look up the default configuration settings and syn‐
	      tax after upgrading.

	      Reference copy of the configuration file. Always kept up to date
	      with the version of Squid you are using.

	      Use  this	 to  read  the documentation for configuration options
	      available in your build of Squid. The online configuration  man‐
	      ual  is  also  available	for a full reference of options.  see‐

	      The main configuration file for the web cachemgr.cgi tools.

	      The main configuration file for the Sample MSNT authenticator.

	      CSS Stylesheet to control the display of generated error	pages.
	      Use  this to set any company branding you need, it will apply to
	      every language Squid provides error pages for.

       Some files also located elsewhere:

       /etc/squid/mime.conf (mime_table)
	      MIME type mappings for FTP gatewaying

	      Location of Squid error pages and templates.

       Squid was written over many years by a changing team of developers  and
       maintained  in  turn  by	 Duane	Wessels <duane@squid-cache.org> Henrik
       Nordstrom  <hno@squid-cache.org>	 Amos  Jeffries	  <amosjeffries@squid-

       With  contributions  from many others in the Squid community.  see CON‐
       TRIBUTORS for a full list of individuals	 who  contributed  code.   see
       CREDITS for a list of major code contributing copyright holders.

       This  software  product,	 SQUID, is developed by a team of individuals,
       and copyrighted (C) 2001 by the Regents of the University  of  Califor‐
       nia,  with  all	rights	reserved.   UCSD  administered the NLANR Cache
       grants, NCR 9616602 and NCR 9521745 under which most of this  code  was

       This program is free software; you can redistribute it and/or modify it
       under the terms of the GNU General Public License (version 2)  as  pub‐
       lished  by the Free Software Foundation.	 It is distributed in the hope
       that it will be useful, but WITHOUT  ANY	 WARRANTY;  without  even  the
       POSE.  See the GNU General Public License for more details.

       see the CREDITS file for further	 copyright  licensing  of  third-party
       code contributions.

       Questions  on  the usage of this program can be sent to the Squid Users
       mailing list <squid-users@squid-cache.org>

       Bug reports  need  to  be  made	in  English.   See  http://wiki.squid-
       cache.org/SquidFaq/BugReporting for details of what you need to include
       with your bug report.

       Report bugs or bug fixes using http://bugs.squid-cache.org/

       Report serious security bugs to Squid Bugs <squid-bugs@squid-cache.org>

       Report ideas for new improvements to the Squid Developers mailing  list

       cachemgr.cgi  (8),  squidclient (1), pam_auth (8), squid_ldap_auth (8),
       squid_ldap_group (8), ext_session_acl (8), squid_unix_group (8),
       The Squid FAQ wiki http://wiki.squid-cache.org/SquidFaq
       The Squid Configuration Manual http://www.squid-cache.org/Doc/config/


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