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On Debian, I have multiple hard drives, how do I know where /var/www is?

Bonus: How do I check the capacity and consumed capacity and of my drives?

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up vote 5 down vote accepted

You can find where /var/www is, by checking where it (or /var) is mounted, using the mount command.

To check the available/used space on the drives, try df (or df -h for more readable output). It will show the used and available space in all the mounted partitions. E.g.

-> % df -kh
Sist. Arq.       Tam  Usad Dispon. Uso% Montado em
rootfs           94G   34G     60G  36% /
/dev            2,9G     0    2,9G   0% /dev
run             2,9G  484K    2,9G   1% /run
/dev/sda1        94G   34G     60G  36% /
[... the rest was snipped, I have many more partitions ...]

Also, df /path/to/file works (at least on Linux):

-> % df /var/log
Filesystem     1K-blocks     Used Available Use% Mounted on
/dev/sda1       97667596 34853688  62813908  36% /
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Mount won't tell you if any part of the path is a symlink. – XTL Jun 8 '12 at 7:22

You fail to mention your operating system, but on linux, this works:

$ df /path/to/some/file/or/directory
Filesystem                          1k-blks    Used   Avail Cap Mounted
/dev/harddisk_partition 8388348 5187768 3200580 62% /home/username
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This is standard behaviour for df(1). It works elsewhere, too. – Alexios Jun 7 '12 at 20:43
Not for HP-UX ;o) – jippie Jun 7 '12 at 20:59
Right. HP-UX just has to be different. (bad memories) – Alexios Jun 8 '12 at 3:35
This will work through symlinks, too. On a Red Hat type box, say df /etc/grub.conf and it will probably tell you the disk free space on your /boot partition, not on root, where /etc probably lives. – Warren Young Jun 8 '12 at 21:25

Use mount to look at your disk mount points. Look for the longest match for /var/www and that's your disk. In my case, it's /dev/sda2.

[mpenning@Bucksnort ~]$ mount
/dev/sda2 on / type ext3 (rw,errors=remount-ro)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
/dev/sda1 on /boot type ext3 (rw)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
[mpenning@Bucksnort ~]$

Drive space consumption in KBytes, per mount point:

[mpenning@Bucksnort ~]$ df -k
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sda2             30759872  22835672   6361680  79% /
tmpfs                  1947664        12   1947652   1% /lib/init/rw
udev                   1943240       104   1943136   1% /dev
tmpfs                  1947664         0   1947664   0% /dev/shm
/dev/sda1              1441280     67136   1300928   5% /boot
[mpenning@Bucksnort ~]$
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What do you mean "Look for the longest match for /var/www" – Kirk Ouimet Jun 7 '12 at 20:33
/dev/sda2 is mounted on /. That is the longest path that matches /var/www. However, someone below mentioned a better method using df /var/www... that will give you the drive mount directly. – Mike Pennington Jun 7 '12 at 20:34
It's also wrong if anything in that path is a symlink. – XTL Jun 8 '12 at 7:21

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