LinuxGuruz
  • Last 5 Forum Topics
    Replies
    Views
    Last post


The Web Only This Site
  • BOOKMARK

  • ADD TO FAVORITES

  • REFERENCES


  • MARC

    Mailing list ARChives
    - Search by -
     Subjects
     Authors
     Bodies





    FOLDOC

    Computing Dictionary




  • Text Link Ads






  • LINUX man pages
  • Linux Man Page Viewer


    The following form allows you to view linux man pages.

    Command:

    postalias

    
    
    

    SYNOPSIS

           postalias [-Nfinoprsvw] [-c config_dir] [-d key] [-q key]
                   [file_type:]file_name ...
    
    
    

    DESCRIPTION

           The  postalias(1)  command creates or queries one or more Postfix alias
           databases, or updates an existing one. The input and output  file  for-
           mats  are  expected  to  be compatible with Sendmail version 8, and are
           expected to be suitable for the use as NIS alias maps.
    
           If the result files do not exist they will be  created  with  the  same
           group and other read permissions as their source file.
    
           While  a  database update is in progress, signal delivery is postponed,
           and an exclusive, advisory, lock is placed on the entire  database,  in
           order to avoid surprises in spectator processes.
    
           The format of Postfix alias input files is described in aliases(5).
    
           By  default  the  lookup key is mapped to lowercase to make the lookups
           case insensitive; as of Postfix 2.3 this case folding happens only with
           tables whose lookup keys are fixed-case strings such as btree:, dbm: or
           hash:. With earlier versions, the lookup key is folded even with tables
           where  a lookup field can match both upper and lower case text, such as
           regexp: and pcre:. This resulted in loss of  information  with  $number
           substitutions.
    
           Options:
    
           -c config_dir
                  Read  the  main.cf  configuration  file  in  the named directory
                  instead of the default configuration directory.
    
           -d key Search the specified maps for key and remove one entry per  map.
                  The  exit  status  is  zero  when  the requested information was
                  found.
    
                  If a key value of - is specified, the program reads  key  values
                  from  the standard input stream. The exit status is zero when at
                  least one of the requested keys was found.
    
           -f     Do not fold the lookup key  to  lower  case  while  creating  or
                  querying a table.
    
                  With  Postfix  version  2.3 and later, this option has no effect
                  for regular expression tables. There, case folding is controlled
                  by appending a flag to a pattern.
    
           -i     Incremental  mode.  Read  entries from standard input and do not
                  truncate an existing database. By default, postalias(1)  creates
                  a new database from the entries in file_name.
    
                  default access permissions (mode 0644).
    
           -q key Search  the  specified  maps  for  key and write the first value
                  found to the standard output stream. The  exit  status  is  zero
                  when the requested information was found.
    
                  If  a  key value of - is specified, the program reads key values
                  from the standard input stream and writes one line of key: value
                  output for each key that was found. The exit status is zero when
                  at least one of the requested keys was found.
    
           -r     When updating a table, do not complain about attempts to  update
                  existing entries, and make those updates anyway.
    
           -s     Retrieve all database elements, and write one line of key: value
                  output for each element. The elements are  printed  in  database
                  order,  which  is not necessarily the same as the original input
                  order.  This feature is available in  Postfix  version  2.2  and
                  later, and is not available for all database types.
    
           -v     Enable  verbose  logging  for  debugging  purposes.  Multiple -v
                  options make the software increasingly verbose.
    
           -w     When updating a table, do not complain about attempts to  update
                  existing entries, and ignore those attempts.
    
           Arguments:
    
           file_type
                  The database type. To find out what types are supported, use the
                  "postconf -m" command.
    
                  The postalias(1) command can query any supported file type,  but
                  it can create only the following file types:
    
                  btree  The  output is a btree file, named file_name.db.  This is
                         available on systems with support for db databases.
    
                  cdb    The output is one  file  named  file_name.cdb.   This  is
                         available on systems with support for cdb databases.
    
                  dbm    The output consists of two files, named file_name.pag and
                         file_name.dir.  This is available on systems with support
                         for dbm databases.
    
                  hash   The output is a hashed file, named file_name.db.  This is
                         available on systems with support for db databases.
    
                  sdbm   The output consists of two files, named file_name.pag and
                         file_name.dir.  This is available on systems with support
                         for sdbm databases.
    
           postalias(1) terminates with  zero  exit  status  in  case  of  success
           (including  successful  "postalias -q" lookup) and terminates with non-
           zero exit status in case of failure.
    
    
    

    ENVIRONMENT

           MAIL_CONFIG
                  Directory with Postfix configuration files.
    
           MAIL_VERBOSE
                  Enable verbose logging for debugging purposes.
    
    
    

    CONFIGURATION PARAMETERS

           The following main.cf parameters are especially relevant to  this  pro-
           gram.
    
           The  text  below provides only a parameter summary. See postconf(5) for
           more details including examples.
    
           alias_database (see 'postconf -d' output)
                  The alias databases for local(8) delivery that are updated  with
                  "newaliases" or with "sendmail -bi".
    
           config_directory (see 'postconf -d' output)
                  The  default  location of the Postfix main.cf and master.cf con-
                  figuration files.
    
           berkeley_db_create_buffer_size (16777216)
                  The per-table I/O buffer size for programs that create  Berkeley
                  DB hash or btree tables.
    
           berkeley_db_read_buffer_size (131072)
                  The per-table I/O buffer size for programs that read Berkeley DB
                  hash or btree tables.
    
           default_database_type (see 'postconf -d' output)
                  The default database type for use in newaliases(1), postalias(1)
                  and postmap(1) commands.
    
           syslog_facility (mail)
                  The syslog facility of Postfix logging.
    
           syslog_name (see 'postconf -d' output)
                  The  mail  system  name that is prepended to the process name in
                  syslog records, so that "smtpd"  becomes,  for  example,  "post-
                  fix/smtpd".
    
    
    

    STANDARDS

           RFC 822 (ARPA Internet Text Messages)
    
    
    

    SEE ALSO

           aliases(5), format of alias database input file.
           local(8), Postfix local delivery agent.
    
    
    

    AUTHOR(S)

           Wietse Venema
           IBM T.J. Watson Research
           P.O. Box 704
           Yorktown Heights, NY 10598, USA
    
                                                                      POSTALIAS(1)
    
  • MORE RESOURCE


  • Linux

    The Distributions





    Linux

    The Software





    Linux

    The News



  • MARKETING






  • Toll Free

webmaster@linuxguruz.com
Copyright © 1999 - 2016 by LinuxGuruz