Codename:  quantal
Linux sharmaji-HCL-Desktop 3.5.0-21-generic #32-Ubuntu SMP Tue Dec 11 18:52:46
UTC 2012 i686 i686 GNU/Linux
df: 'run/user' :No such file or directory
Filesystem    Size    Used   Avail   Use%  Mounted on
/dev/sda5    150G      5.2G   137G    4%    /
udev         930M       0     930M    0%    /dev
/dev/sda5 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc(rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs(rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusect1(rw)
none on /sys/kernel/debug type debugfs(rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type devtmpfs(rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)

mount:warning:/etc/mtab is not writable (e.g. read only filesystem)
      It's not possible that information reported by mount(8) is not up to date.For
      actual information about system mount points check the /proc/mounts file.