34 lines
948 B
Groff
34 lines
948 B
Groff
.TH sys_id 4
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.SH NAME
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sys_id \- system identification (hostname) file
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.SH DESCRIPTION
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The file
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.I /etc/sys_id
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contains the name by which the system is known on communications
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networks such as the Internet and UUCP.
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The name can be up to 64 alphanumeric characters long
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and can include periods and hyphens.
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Periods are not part of the name but serve to separate components
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of a domain-style name.
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For example:
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.Ex
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iris.widgets.com
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.Ee
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During system startup this file is read by the script
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.I /etc/rc2.d/S20sysetup
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and the contents are passed as a parameter to
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\f2hostname\f1(1) to initialize the system name.
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Once this has been done, this name is returned by the
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commands \f2hostname\f1(1) and \f2uname\f1(1) and by the system calls
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\f2gethostname\f1(2) and \f2uname\f1(2).
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.IR uname (1)
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returns only the first eight characters up to the first period.
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.SH FILES
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/etc/sys_id
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.SH SEE ALSO
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hostname(1),
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uname(1),
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gethostname(2),
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uname(2),
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hostname(5).
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