The stat Function
While these file tests are fine for testing various attributes
regarding a particular file or filehandle, they don’t tell the
whole story. To
get at the remaining information about
a file, merely call the
stat
function, which returns pretty much everything that the POSIX system
call stat
returns (hopefully more than you want to
know). Not all of the stat
fields are meaningful
under Perl for Win32, because they include information not supported
by the Windows NT filesystems.
The operand to stat
is a filehandle or an
expression that evaluates to a filename. The return value is either
undef
, indicating that the stat failed, or a
13-element list,[72] most easily described using the following list of scalar
variables:
($dev,$ino,$mode,$nlink,$uid,$gid,$rdev, $size,$atime,$mtime,$ctime,$blksize,$blocks) = stat(...)
Table 10.2 lists each field along with a brief description.
Table 10-2. stat Return Valves
Field |
Description |
---|---|
dev |
Device number (drive number) |
ino |
Inode number: 0 (zero) in Perl for Win32 |
mode |
File permission mode: read/write/execute |
nlink |
Number of links to file (usually one for Win32 systems—NTFS filesystems may have a value greater than one) |
uid |
User ID—zero for Win32 |
gid |
Group ID—zero for Win32 |
rdev |
Device Identifier (drive number) |
size |
File size in bytes |
atime |
Last access time (C lang. time_t value) |
mtime |
Last modification time (C lang. time_t value) |
ctime |
File creation time (C lang. time_t value) |
blksize |
Disk block size (cluster ... |
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