In unix-like OS's, there are the mount and mountpoint commands
that can help one determine whether a file system is mounted such
as
$ mount |grep horseradish.
If there is a file system defined in fstab which might look like
UUID="B159-BB80" /horseradish vfat rw,user,noauto 0 0
and it is not presently mounted, the mount command should not
have any output containing the name horseradish. If the device
with the correct UUID is mounted, the command of mount which
shows all mounted file systems will contain the horseradish line
and also where it is mounted and so forth but the big difference
is that you get a string if /horseradish is mounted and zilch if
it is not.
There is also a unix command of mountpoint which will say
that horseradish, in this case, is not a mount point if it is not
mounted or that it is a mountpoint if it has a FS mounted on it.
The perl script I am working on should check to see if a
device is mounted with the requested name and do one thing if it
is and something else if it is not.
Of course, I can use system calls and call the unix mount
or mountpoint applications but is there a proper perl way to do
this since system calls are not as elegant? Thank you.
Martin McCormick
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