/tmp shows 690 Mb full, actual size 72 K, Why?

Posted by Ankit on Ask Ubuntu See other posts from Ask Ubuntu or by Ankit
Published on 2012-08-29T16:28:59Z Indexed on 2012/08/30 3:49 UTC
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Why is /tmp diretory on my system showing 690 Mb full, whereas du -sh /tmp shows only 72K full.

drwxrwxrwt 2 lightdm lightdm  4096 Aug 29 21:49 at-spi2
drwx------ 2 ankit   ankit    4096 Aug 29 21:50 keyring-0JTfoY
drwx------ 2 ankit   ankit    4096 Aug 29 21:44 keyring-rChLLL
drwx------ 2 root    root    16384 Jul 22 02:10 lost+found
drwx------ 2 ankit   ankit    4096 Jan  1  1970 orbit-ankit
drwx------ 2 lightdm lightdm  4096 Aug 29 21:50 pulse-2L9K88eMlGn7
drwx------ 2 root    root     4096 Aug 29 21:44 pulse-PKdhtXMmr18n
drwx------ 2 ankit   ankit    4096 Aug 29 21:50 pulse-zR1TZUAZfmQW
drwx------ 2 ankit   ankit    4096 Aug 29 21:44 ssh-dlslOXOq2203
drwx------ 2 ankit   ankit    4096 Aug 29 21:50 ssh-MrQQVRyy3316
-rw------- 1 ankit   ankit       0 Aug 29 21:45 tmp0qnNG4
-rw------- 1 ankit   ankit       0 Aug 29 21:50 tmpVvSMt6
-rw------- 1 ankit   ankit       0 Aug 29 21:49 tmpy9Gadz
-rw-rw-r-- 1 lightdm lightdm     0 Aug 29 21:44 unity_support_test.0


ankit@duster:/tmp$ df -h
df: `/home/ankit/.gvfs': Transport endpoint is not connected
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1        79G   11G   65G  14% /
udev            2.9G  4.0K  2.9G   1% /dev
tmpfs           1.2G  868K  1.2G   1% /run
none            5.0M     0  5.0M   0% /run/lock
none            2.9G  220K  2.9G   1% /run/shm
/dev/sda7        38G  690M   35G   2% /tmp
/dev/sda5        93G   26G   63G  30% /home
/dev/sda6        93G  1.6G   87G   2% /boot
/dev/sda3       154G   69G   78G  48% /home/mount_150
ankit@duster:/tmp$ 
ankit@duster:/tmp$ 
ankit@duster:/tmp$ sudo du -sh /tmp/ 72K    

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