sudo apt-get install screen
screen -Amd command
screen -r
(DSD820 aka DSTV DualView Decoder).
lspci
04:00.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11)
04:00.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11)
And the settings:rmmod bttv
rmmod tuner
sudo modprobe bttv card=70 tuner=1
# shut it down
sudo /etc/init.d/avahi-daemon stop
# stop it starting at the next reboot by removing the startup links
sudo update-rc.d -f avahi-daemon remove
Removing any system startup links for /etc/init.d/avahi-daemon ...
/etc/rc1.d/K86avahi-daemon
/etc/rc2.d/S50avahi-daemon
/etc/rc3.d/S50avahi-daemon
/etc/rc4.d/S50avahi-daemon
/etc/rc5.d/S50avahi-daemon
[/caption]
The intention of this test was to try and understand the effects of switching the geyser off for a long period every day. The test was conducted on an old Sadia 30gal (136 litre), 3Kw geyser. Hot water was used exclusively to shower twice a day, once in the morning and once in the evening. No other hot water was used during the test period. During the first two days the geyser was not switched off. After that it was switched off at about midday and then switched on again at about 10:30pm at night for two days. The temperature of the water did not seem to be noticeably lower during the evening shower on those days.
The graphs below represent the electricity used on each day:
You can clearly make out the "reheating spikes" where the thermostat switches the heating element on briefly to reheat the water after it has cooled. The longer duration heating events show when cold water entered the geyser to replace that used during a shower and required heating for up to a few hours. It is assumed that the reheating spikes that occur shortly after the water was heated after a shower, are due to mixing of hot and cold water. (We think that water near the element reaches operating temperature and thus the thermostat switches off the heating element. But not all the water in the geyser has reached that temperature yet. So the thermostat has to switch on again when the hot water near the element mixes with cooler water elsewhere in the geyser).
Day1 - Normal Use Summary Figures:
Energy used heating cold water during/after showers - 4.09kWh
Energy used by reheating spikes - 1.65kWh
Number of reheating spikes - 5
Average energy used per reheating spike - 0.33kWh
Day2 - Normal Use Summary Figures:
Day1 - Simuated Time Switch Summary Figures:
Day2 - Simuated Time Switch Summary Figures:
Conclusions that can be drawn from this test:
The summary figures for the test are:
| Average energy used per "normal day" | 5.92kWh |
| Average energy used per "timer day" | 6.17kWh |
lrwxrwxrwx 1 root root 11 Mar 2 2000 rmt -> /sbin/rmt
rmt contains the nine characters /sbin/rmt. The reason symbolic links fail when chroot(2) is used to change the position of the root (/)of the filesystem is that, once / is moved, the pointed-to file path changes. If, for example, if chroot(2) is used to change the filesystem root to /ftp, then the symlink above would be actually be pointing to /ftp/sbin/rmt. Chances that that link, if chroot(2) is used, now points to a path that does not exist. Symbolic links that point to nonexistent files are known as dangling symbolic links. Note that symbolic links to files underneath the new root, such as symlinks to a file in the same directory:> pwd
/var/ftp
> ls -l
-rw-r--r-- 1 root root 0 Jan 16 11:50 tmpfile
lrwxrwxrwx 1 root root 7 Jan 16 11:50 tmplink -> tmpfile
/var/ftp/incoming directory available in /home/bob/incoming and /home/dave/incoming, use one of these commands:mount --bind /var/ftp/incoming /home/bob/incoming
mount --bind /var/ftp/incoming /home/dave/incoming
mount -o bind /var/ftp/incoming /home/bob/incoming
mount -o bind /var/ftp/incoming /home/dave/incoming
sudo mount --bind /media/disk/Sorted\ MP3/ /home/sharedftp/download/Music/
/etc/fstab file may need to have these mounts added/path1 /path2 bind defaults,bind 0 0