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man5/hosts.5
17
man5/hosts.5
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@ -37,7 +37,7 @@ with hostnames, one line per IP address. For each host a single
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line should be present with the following information:
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line should be present with the following information:
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.RS
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.RS
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.PP
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.PP
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IP_address canonical_hostname aliases
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IP_address canonical_hostname [aliases...]
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.RE
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.RE
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.PP
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.PP
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Fields of the entry are separated by any number of blanks and/or
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Fields of the entry are separated by any number of blanks and/or
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@ -45,10 +45,9 @@ tab characters. Text from a "#" character until the end of the line is
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a comment, and is ignored. Host names may contain only alphanumeric
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a comment, and is ignored. Host names may contain only alphanumeric
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characters, minus signs ("-"), and periods ("."). They must begin with an
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characters, minus signs ("-"), and periods ("."). They must begin with an
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alphabetic character and end with an alphanumeric character.
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alphabetic character and end with an alphanumeric character.
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Aliases provide for name changes, alternate spellings,
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Optional aliases provide for name changes, alternate spellings,
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shorter hostnames, or generic hostnames (for example,
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shorter hostnames, or generic hostnames (for example,
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.IR localhost ).
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.IR localhost ).
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The format of the host table is described in RFC 952.
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.PP
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.PP
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The Berkeley Internet Name Domain (BIND) Server implements the
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The Berkeley Internet Name Domain (BIND) Server implements the
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Internet name server for UNIX systems. It augments or replaces the
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Internet name server for UNIX systems. It augments or replaces the
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@ -80,10 +79,16 @@ advantage.
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127.0.0.1 localhost
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127.0.0.1 localhost
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192.168.1.10 foo.mydomain.org foo
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192.168.1.10 foo.mydomain.org foo
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192.168.1.13 bar.mydomain.org bar
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192.168.1.13 bar.mydomain.org bar
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216.234.231.5 master.debian.org master
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146.82.138.7 master.debian.org master
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205.230.163.103 www.opensource.org
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209.237.226.90 www.opensource.org
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.fi
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.fi
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.SH "HISTORICAL NOTE"
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.SH "NOTE"
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Modifications to this file normally take effect immediately,
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except in cases where the file is cached by applications.
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.SH "HISTORICAL NOTES"
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RFC 952 gave the original format for the host table, though it has
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since changed.
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Before the advent of DNS, the host table was the only way of resolving
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Before the advent of DNS, the host table was the only way of resolving
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hostnames on the fledgling Internet. Indeed, this file could be
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hostnames on the fledgling Internet. Indeed, this file could be
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created from the official host data base maintained at the Network
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created from the official host data base maintained at the Network
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