Output mount | grep sdcard

mount | grep sdcard
/dev/block/vold/179:1 on /mnt/sdcard type vfat (rw,dirsync,nosuid,noexec,relatime,uid=1000,gid=1015,fmask=0602,dmask=0602,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)
tmpfs on /mnt/sdcard/.android_secure type tmpfs (ro,relatime,size=0k,mode=000)