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I'm trying to find out how much disk space a system has, but df does not show the / filesystem :

# df
Filesystem           1K-blocks      Used Available Use% Mounted on                                                                      
devtmpfs                212820         0    212820   0% /dev
none                    216832         4    216828   0% /dev/shm
mtd1                      1536       476      1060  31% /flash
tmpfs                    10240         0     10240   0% /queues
#

Where is my /, and how much space is on it?

  • 2
    Try df -k. Should show you / – Insane Oct 15 '15 at 19:47
  • What is the output of df /? Also, please post the contents of /etc/fstab. – Steven Oct 15 '15 at 20:10
  • @Insane the -k option is (on Debian at least) an alias for --block-size=1K, why would that show extra filesystems? I would be more interested in df -a output. Also, even more interesting, the output of mount without any parameters. – Niels Keurentjes Oct 15 '15 at 20:30
  • @NielsKeurentjes I've only ever used it with the -k flag and it's only ever shown all my file systems, so I commented with the suggestion. – Insane Oct 15 '15 at 20:33
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    @Insane I've never used the -k flag and it's only ever shown all my filesystems hehe. I don't see anything different in the output either as the block size is 1K by default I think. -a stands for include dummy filesystems which also (quite useless) shows mounts like /proc. – Niels Keurentjes Oct 15 '15 at 20:35
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You can use Disk Usage Analyzer utility to see free space and space used by system and other applications.

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