55 lines
1.2 KiB
Groff
55 lines
1.2 KiB
Groff
.TH HOSTS 5
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.SH NAME
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hosts \- hostname to IP address database
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.SH SYNOPSIS
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.B /etc/hosts
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.SH DESCRIPTION
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The hosts database lists the IP addresses and the hostnames that translate
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to these IP addresses. It is used by
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.BR nonamed (8)
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in a network without name servers. A simple
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.B /etc/hosts
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may look like this:
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.PP
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.RS
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.ta +15n +10n
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.nf
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127.0.0.1 localhost
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192.9.200.1 darask
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192.9.200.2 burask
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.fi
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.RE
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.PP
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The localhost entry lists a special address that refers to the local host
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itself (a kind of /dev/tty for hosts.) You should only list it if
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.B nonamed
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needs it! The other entries are actual machines. The file may contain
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comments marked with '#'.
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.PP
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You can have aliases (more hostnames on the same line), but it is not
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recommended, because
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.B nonamed
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can't present them to the system as CNAME records. An often seen form like
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.PP
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.RS
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192.9.200.1 darask.home.cs.vu.nl\0\0darask
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.RE
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.PP
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is harmless though, and has the small advantage that you can use the short
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name in
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.B /etc/ethers
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so
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.B rarpd
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can match it at boot time.
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.SH FILES
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.TP 15n
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/etc/hosts
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Hosts database.
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.SH "SEE ALSO"
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.BR ethers (5),
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.BR nonamed (8),
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.BR rarpd (8),
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.BR boot (8).
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.SH AUTHOR
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Kees J. Bot (kjb@cs.vu.nl)
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