V3/man/man2/stat.2

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NAME		stat  --  get file status
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SYNOPSIS	sys stat; name; buf  / stat = 18.
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DESCRIPTION	name____ points to a null-terminated string naming
a file; buf___ is the address of a 34(10) byte buffer
into which information is placed concerning the file.
It is unnecessary to have any
permissions at all with respect to the file, but all directories
leading to the file must be readable.
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After stat____, buf___ has the following format:
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buf, +1		i-number
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+2,+3		flags (see below)
.br
+4		number of links
.br
+5		user ID of owner
.br
+6,+7		size in bytes
.br
+8,+9		first indirect block or contents block
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.li
...
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+22,+23		eighth indirect block or contents block
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+24,+25,+26,+27	creation time
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+28,+29,+30,+31	modification time
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+32,+33		unused
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The flags are as follows:
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100000	used (always on)
040000	directory
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020000	file has been modified (always on)
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010000	large file
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000040	set user ID
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000020	executable
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000010	read, owner
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000004	write, owner
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000002	read, non-owner
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000001	write, non-owner
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SEE ALSO	stat(I), fstat(II)
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DIAGNOSTICS	Error bit (c-bit)
is set if the file cannot be found.
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BUGS		--