Is there a quick-and-dirty way to tell programmatically, in shell script or in Perl, whether a path is located on a remote filesystem (nfs or the like) or a local one? Or is the only way to do this to parse /etc/fstab and check the filesystem type?
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stat -f -c %T <filename> should do what you want. You might also want -l
Chris Dodd
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2Again, not portable to Solaris (though I have the command on the machine, it is not standard issue). – Jonathan Leffler Nov 17 '08 at 19:30
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You can use "df -T" to get the filesystem type for the directory, or use the -t option to limit reporting to specific types (like nfs) and if it comes back with "no file systems processed", then it's not one of the ones you're looking for.
df -T $dir | tail -1 | awk '{print $2;}'
Steve Baker
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1Not portable - 'df -T' does not work on Solaris, for instance. – Jonathan Leffler Nov 17 '08 at 19:28
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If all network filesystems use host:path semantics for the device name, then I suppose you can check for : in the device name or something to that effect then. – Steve Baker Nov 17 '08 at 20:28
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If you use df on a directory to get info only of the device it resides in, e.g. for the current directory:
df .
Then, you can just parse the output, e.g.
df . | tail -1 | awk '{print $1}'
to get the device name.
Svante
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I have tested the following on solaris7,8,9 & 10 and it seems to be reliable
/bin/df -g <filename> | tail -2 | head -1 | awk '{print $1}'
Should give you have the fs type rather than trying to match for a "host:path" in your mount point.
Vagnerr
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On some systems, the device number is negative for NFS files. Thus,
print "remote" if (stat($filename))[0] < 0
Leon Timmermans
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