I can print current directory using pwd, but this gives me the path I navigated to get to where I am. I need to know which disk/partition current directory is on.
For example, if I create symlink user@pc:~$ ln -s /media/HD1 hard_disk and then navigate to ~/hard_disk and run pwd it will print /home/user/hard_disk.
I would like to get the actual path I'm currently on or better just the actual filesystem I'm currently on, which corresponds to one in df.
pwd -P will give you the physical directory you are in, i.e. the pathname of the current working directory with the symbolic links resolved.
Using df . would give you the df output for whatever partition the current directory is residing on.
Example (on an OpenBSD machine):
$ pwd /usr/ports $ pwd -P /extra/ports $ df . Filesystem 512-blocks Used Avail Capacity Mounted on /dev/sd3a 103196440 55987080 42049540 57% /extra To parse out the mountpoint from this output, you may use something like
$ df -P . | sed -n '$s/[^%]*%[[:blank:]]*//p' /extra To parse out the filesystem device used, use
$ df -P . | sed -n '$s/[[:blank:]].*//p' /dev/sd3a I believe some Linux systems also supports
findmnt --target . (where --target . can be replaced by -T .) or, for more terse output,
findmnt --output target --noheadings --target . (where --noheadings may be replaced by -n, and --output target may be replaced by -o target) to get the mountpoint holding the filesystem that the current directory is located on.
Use --output source to get the mounted device node.
tank/data/whatever/someplace back, where tank is the pool name. (At that point you could map it back to a pool, and from there to a set of candidate disks, but I'm pretty sure there's no direct way to map it back to "a" disk.) As said by Ignacio here, you can use df -P file/goes/here | tail -1 | cut -d' ' -f 1 .
pwd -P, but ok.