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NSLU2 SlugOS 4.8 beta setup EN
Yahoo nslu2-linux, msg 20476 Rod Whitby 2007-12-29 SlugOS has about 5000 packages to choose from - 4000 from OpenEmbedded, which have been specifically compiled mainly for handheld, limited memory devices, and 1000 from Optware (as per Unslung). SlugOS is available in either big-endian or little-endian modes, and uses a 2.6.21.7 kernel and a recent version of glibc. SlugOS does not have a web user interface. There is a small amount of room left in internal flash after installation (enough to run some small server applications), but installation of large packages will require an external storage device. If the external device fails, SlugOS falls back to running from internal flash. IMO, one of the biggest differences between Debian and SlugOS is that SlugOS maintains a complete bootable rootfs in flash that you can use to recover your hard drive or memory stick in event of a problem. Debian boots directly from the external devices, and thus does not have this recovery ability.
write SlugOS 4.8 into Flash memory
Windows: http://www.nslu2-linux.org/wiki/Main/SercommFirmwareUpdater
Linux: http://www.nslu2-linux.org/wiki/Main/UpSlug2
Important: first setup a static TCP/IP Adress in the NSLU2 which fits your network, no DHCP.
To use it, first you have to put your NSLU2 into 'upgrade mode'. This is described here: http://www.nslu2-linux.org/wiki/HowTo/UseTheResetButtonToEnterUpgradeMode In short:
- Shutdown the slug
- Using a paper clip (or pushpin), push and hold in the reset button. (The reset button is located on the back of the NSLU2 above the power connection.)
- While holding in the reset button, press and release the power button.
- Watch the orange Ready/Status LED and after approx 10 seconds the LED will turn solid red (except for some models, see note below). Quickly release the reset button.
- You should be in upgrade mode which is indicated by the Ready/Status LED alternating between red and green.
Then, to find a list of NSLU2 machines in upgrade mode, just run the upslug2 program with no options. (Note that UpSlug2 must always run as root):
$ upslug2
If the NSLU2 was found it shows the MAC address.
You specify the flash image using the --image option. The flash image should be an 8 MByte file. Here is an example:
$ upslug2 --image="slugosbe-4.8-beta-nslu2.bin"
As it runs the program will display progress information as it erases, programs and verifies the flash. When it completes it will reboot the Slug.
turnup - copy Flash content to USB-Stick
http://www.nslu2-linux.org/wiki/OpenSlug/InitialisingOpenSlug
"turnup init" is mostly used to change the password. The other parameters could be skipped by pressing ENTER.
"turnup memstick" is very similar to disk but it retains the RAM file systems to avoid putting frequently changing files on a USB flash device.
First you have to prepare your USB-stick (>= 1GB) in order to use it, partitioning and formatting.
- Power up the NSLU2
Plugin USB Stick (>=1 GB) to USB-port Disk 2
$ df # to check for "mounts", if there are any mounts (/dev/sdaX) do e.g. $ umount /dev/sda1
Then delete all existing partitions, create some new ones (primary) and format the partions:
$ fdisk /dev/sda Partition 1: root file system 512 MB, ext3 Partition 2: swap 64 MB Partition 3: /home, ext3 (size = Rest of USB-stick) $ mkfs.ext3 /dev/sda1 # format the flash stick $ mkfs.ext3 /dev/sda3 # format the flash stick
Then you can copy the internal flash memory to the USB-stick:
$ turnup memstick -i /dev/sda1 -t ext3 # copy the filesystem and set the bootloader to use it REBOOT $ df # check for valid mounts Filesystem 1k-blocks Used Available Use% Mounted on /dev/sda1 505604 20200 459300 4% / /dev/mtdblock4 6528 4940 1588 76% /initrd /dev/sda1 505604 20200 459300 4% /dev/.static/dev tmpfs 2048 32 2016 2% /dev tmpfs 15188 24 15164 0% /var/volatile tmpfs 15188 0 15188 0% /dev/shm
Repair defect flash page
Trying to enter SlugOS48 for the first time, I got an error message:
Rebooting... done Putty 192.168.17.81 SSH accept SSH key - OK login as: root root@192.168.17.81's password: opeNSLUg PuTTY Fatal Error: Server unexpectedly closed network connection Connected a serial cable to J2 of the board. HyperTerminal 115200baud8N1 on ttyS0: root@LKG300DB0:~$ Data CRC cee07dfc != calculated CRC ae2900a4 for node at 0042f66c Data CRC cee07dfc != calculated CRC ae2900a4 for node at 0042f66c $ logread Feb 20 14:15:27 (none) user.warn kernel: Data CRC cee07dfc != calculated CRC ae2 900a4 for node at 0042f66c (dez. 4.388.460, RAM)
How to connect a serial cable to the NSLU2 box, please see http://www.nslu2-linux.org/wiki/Info/PinoutOfInternalSerialPort and http://www.nslu2-linux.org/wiki/HowTo/AddASerialPort
In order to locate the spot of the error in the file system do a "turnup memstick" or "turnup disk".
$ turnup memstick -i /dev/sda1 -t ext3 cpio: Read error at byte 126976 in file ./usr/sbin/sshd, padding with zeros NOTE: must be a defective NAND flash page
Now I know the SSH daemon (sshd) file is affected. In order to repair that, copy that file from an ipkg archive via scp from a SSH server (easiest Linux) to the flash file system, and then to the memory stick for repair. Check with ls -ls sshd if the execute permissions are set. If not do chmod a+x sshd.
$ scp rudi@192.168.17.28:/home/rudi/Install/SlugOS/sshd sshd Now file "sshd" is in /root/sshd $ ls -ls sshd # check for execute permissions 265 -rwxr-xr-x 1 root root 270000 Mar 10 08:25 sshd $ chmod a+x sshd # if the execute (x) permissions are not set $ mount -t ext3 /dev/sda1 /media/sda1 # mount memory stick $ cp sshd /media/sda1/usr/sbin/sshd # copy to memory stick $ reboot
Now the Problem was solved, and I could login via SSH with PUTTY.
SlugOS setup on USB-Stick
In case of a operating system change it gives the posibility to keep the home folder, if it is on another partition. In oder to make it permanent do the following:
Edit /etc/fstab: append "/dev/sda3 /home ext3 noatime 0 0"
append "/dev/sda2 swap swap defaults 0 0"
$ rebootNow the filesystem looks like:
root@LKG300DB0:~$ df Filesystem 1k-blocks Used Available Use% Mounted on /dev/sda1 483914 16536 442394 4% / /dev/mtdblock4 6528 5088 1440 78% /initrd /dev/sda1 483914 16536 442394 4% /dev/.static/dev tmpfs 2048 28 2020 1% /dev /dev/sda3 382760 8239 354757 2% /home tmpfs 15188 24 15164 0% /var/volatile tmpfs 15188 0 15188 0% /dev/shm
Now add swap space:
$ mkswap /dev/sda2 # 64 - 128 MB
$ swapon /dev/sda2
Check with:
$ free
total used free shared buffers
Mem: 30376 12672 17704 0 588
Swap: 8024 0 8024
Total: 38400 12672 25728
SlugOS 4.8 ipkg packages
In oder to install already provided program packages, you can install them via the program ipkg. But first to have to load the packages list.
$ ipkg update Downloading http://ipkg.nslu2-linux.org/feeds/slugosbe/cross/4.8-beta/Packages.gz Inflating http://ipkg.nslu2-linux.org/feeds/slugosbe/cross/4.8-beta/Packages.gz Updated list of available packages in /var/lib/ipkg/cross Downloading http://ipkg.nslu2-linux.org/feeds/slugosbe/native/4.8-beta/Packages.gz Inflating http://ipkg.nslu2-linux.org/feeds/slugosbe/native/4.8-beta/Packages.gz Updated list of available packages in /var/lib/ipkg/native $ ln -s /var/lib/ipkg/cross /usr/lib/ipkg/lists/cross # to find the list better $ ln -s /var/lib/ipkg/native /usr/lib/ipkg/lists/native # to find the list better
In order to find infos about the installed ipkg packages look in /usr/lib/ipkg/info.
A list of all installed packages can be generated by ipkg list_installed
SlugOS 4.8 optware, ipkg-opt
Several programs, like the midnight-commander are available only via optware. Read at http://www.nslu2-linux.org/wiki/Optware/Slugosbe . The following commands are copied to the clipboard and inserted via right mouse button in the PuTTY terminal. You must do that as root user. Use the text after the "$" sign. The other text is output from the commands, just to verify operation.
root@LKG300DB0:~$ feed=http://ipkg.nslu2-linux.org/feeds/optware/slugosbe/cross/unstable
root@LKG300DB0:~$ ipk_name=`wget -qO- $feed/Packages | awk '/^Filename: ipkg-opt/ {print $2}'`
root@LKG300DB0:~$ wget $feed/$ipk_name
Connecting to ipkg.nslu2-linux.org[140.211.169.169]:80
ipkg-opt_0.99.163-10 100% |*********************************************| 74260 --:--:-- ETA
root@LKG300DB0:~$ tar -xOvzf $ipk_name ./data.tar.gz | tar -C / -xzvf -
.
./opt
./opt/bin
./opt/bin/ipkg
./opt/bin/ipkg-opt
./opt/bin/update-alternatives
./opt/etc
./opt/etc/ipkg.conf
./opt/lib
./opt/lib/libipkg.so
./opt/lib/libipkg.so.0
./opt/lib/libipkg.so.0.0.0
./opt/share
./opt/share/ipkg
./opt/share/ipkg/intercept
./opt/share/ipkg/intercept/depmod
./opt/share/ipkg/intercept/ldconfig
./opt/share/ipkg/intercept/update-modules
root@LKG300DB0:~$ sed -i -e 's|/stable|/unstable|' /opt/etc/ipkg.confNext you must add the new path /opt/bin to the main $PATH, check if its done, and update the list of packages.
$ PATH=$PATH/opt/bin $ env root@LKG300DB0:~$ ipkg-opt update Downloading http://ipkg.nslu2-linux.org/feeds/optware/slugosbe/cross/unstable/Packages.gz Inflating http://ipkg.nslu2-linux.org/feeds/optware/slugosbe/cross/unstable/Packages.gz Updated list of available packages in /opt/lib/ipkg/lists/optware Successfully terminated. Edit /etc/profile, add to PATH list ":/opt/bin" In order to allow a user to "logread": $ sudo ln -s /bin/busybox /opt/bin/logread
Unfortunately in /opt/etc/ipkg.conf the path to the repository is not correct (2010-03-11). At the end of the path ist must be unstable instead of stable. Because is easier for me to edit with joe, I first installed joe.
$ ipkg install joe # ver. 3.1-r0 + ncurses # ver. 5.4-r10 then editing: $ joe /opt/etc/ipkg.conf insert "un" in front of "stable" # ^KX to save
Midnight-Commander (mc) to have a comfortable tool for file handling an editor.
$ ipkg-opt install mc Installing mc (4.7.0.2-1) to /opt/... Downloading http://ipkg.nslu2-linux.org/feeds/optware/slugosbe/cross/unstable/mc_4.7.0.2-1_armeb.ipk package slang suggests installing pcre package slang suggests installing libpng Installing glib (2.20.4-1) to /opt/... Downloading http://ipkg.nslu2-linux.org/feeds/optware/slugosbe/cross/unstable/glib_2.20.4-1_armeb.ipk Installing slang (2.1.4-1) to /opt/... Downloading http://ipkg.nslu2-linux.org/feeds/optware/slugosbe/cross/unstable/slang_2.1.4-1_armeb.ipk Installing e2fslibs (1.41.9-1) to /opt/... Downloading http://ipkg.nslu2-linux.org/feeds/optware/slugosbe/cross/unstable/e2fslibs_1.41.9-1_armeb.ipk Configuring e2fslibs Configuring glib Configuring mc Configuring slang Successfully terminated. root@LKG300DB0:~$ ipkg-opt install pcre Installing pcre (8.01-1) to /opt/... Downloading http://ipkg.nslu2-linux.org/feeds/optware/slugosbe/cross/unstable/pcre_8.01-1_armeb.ipk Installing libstdc++ (6.0.8-6) to /opt/... Downloading http://ipkg.nslu2-linux.org/feeds/optware/slugosbe/cross/unstable/libstdc++_6.0.8-6_armeb.ipk Configuring libstdc++ Configuring pcre Successfully terminated. root@LKG300DB0:~$ ipkg-opt install libpng Installing libpng (1.2.42-1) to /opt/... Downloading http://ipkg.nslu2-linux.org/feeds/optware/slugosbe/cross/unstable/libpng_1.2.42-1_armeb.ipk Installing zlib (1.2.3-3) to /opt/... Downloading http://ipkg.nslu2-linux.org/feeds/optware/slugosbe/cross/unstable/zlib_1.2.3-3_armeb.ipk Configuring libpng Configuring zlib Successfully terminated.
In order to look nice mc needs the package ncurses. If not already installed together with joe, please install:
$ ipkg install ncurses Installing ncurses (5.4-r10) to root... Downloading http://ipkg.nslu2-linux.org/feeds/slugosbe/cross/4.8-beta/ncurses_5.4-r10_armv5teb.ipk package ncurses suggests installing ncurses-terminfo Configuring ncurses $ ipkg install ncurses-doc root@LKG300DB0:~$ ipkg install ncurses-terminfo Installing ncurses-terminfo (5.4-r10) to root... Downloading http://ipkg.nslu2-linux.org/feeds/slugosbe/cross/4.8-beta/ncurses-terminfo_5.4-r10_armv5teb.ipk Configuring ncurses-terminfo
Next, setup $ mc, click with left mouse button on Options / Configuration and click in the box Other options in the field [ ] before save deLete to get a "x" mark, means activated. Last click on [ Save ].
Installing support programs
Now several support programs are installed on the USB-stick. First the common once, then the interfaces.
$ ipkg update # download the package lists 2010-03-11 $ ipkg install joe # ver. 3.1-r0, editor + ncurses # ver. 5.4-r10 $ ipkg-opt install htop # ver. 0.8.3-1 $ ipkg-opt install python25 # ver. 2.5.5-2 + readline ver. 6.1-2 + bzip2 ver. 1.0.5-2 + openssl ver. 0.9.7m-5 + libdb ver. 4.2.52-3 + sqlite ver. 3.6.22-1 + ncurses ver. 5.7-1 + ncursesw ver. 5.7-1 $ ipkg-opt install python # ver. 2.5-1 $ ipkg install man # ver. 1.5p-r3 + less # ver. 406-r0 + groff # ver. 1.19.2-r4 + libstdc++6 # ver. 4.1.2-r13 $ ipkg install man-pages # ver. 2.41-r0 $ ipkg install man-doc $ ipkg install nmap # ver. 3.81-r2 + libpcre0 # ver. 4.4-r8 + libpcap0.9 # ver. 0.9.6-r1 $ ipkg install usbutils # ver. 0.70-r0 (e.g. lsusb) + libusb-0.1-4 # ver. 0.1.12-r1 $ ipkg install ldd # ver. 2.5-r8 (show libraries needed) $ ipkg install gkrellmd # ver. 2.3.2-3 System monitor server $ ipkg install memtester # ver. 4.0.6-r0_armv5teb $ ipkg install memtester-doc $ ipkg install minicom # ver. 2.1-r0 Terminal for RS232 $ ipkg install minicom-doc $ ipkg install iptables # ver. 1.3.8-r1 Firewall + kernel-module-ip-tables # ver. 2.6.21.7+svnr927r0 + kernel-module-x-tables # ver. 2.6.21.7+svnr927r0 + kernel-module-iptable-filter # ver. 2.6.21.7+svnr927r0 $ ipkg install iptables-utils # ver. 1.3.8-r1 $ ipkg install iptables-doc $ ipkg install tar # ver. 1.18-r0 $ ipkg install tar-doc $ ipkg-opt install sed # ver. 4.2.1-1 stream editor $ ipkg-opt install strace # ver. 4.5.19-1 $ ipkg install strace-doc # ver. 4.5.14-r4 $ ipkg install gdb # ver. 6.6-r3 + libexpat1 # ver. 2.0.0-r2 + libthread-db1 # ver. 2.5-r8 $ ipkg install libexpat-doc # ver. 2.0.0-r2 $ ipkg install gdb-doc # ver. 6.6-r3 $ ikkg install findutils # ver. 4.2.29-r0 $ ikkg install findutils-doc # ver. 4.2.29-r0 $ ikkg install memtester # ver. 4.0.6-r0 $ ikkg install memtester-doc # ver. 4.0.6-r0 In order to see a list of all installed module type: $ ipkg list_installed > ipkg_installed80.txt
USB-RS232 serial interface (Prolific PL2303 chip, or FTDI), with test procedures.
There was one case that an USB-RS232 converter with pl2303 chip did not work reliable with the DS9097 1-wire adapter (often CRC error). With an ELV A/D converter module it worked. It looks like an analog problem.
$ ipkg-opt install py25-serial # ver. 2.4-1 + py-serial-common # ver. 2.4-1 $ ipkg-opt install digitemp # ver. 3.6.0-1 $ sudo ln -s /opt/bin/digitemp_DS9097 /opt/bin/digitemp # set link for RS232 Adapter + libusb # ver. 0.1.12-1 $ ipkg install kernel-module-usbserial # ver. 2.6.21.7 $ ipkg install kernel-module-pl2303 # ver. 2.6.21.7 or FTDI $ ipkg install kernel-module-ftdi-sio # ver. 2.6.21.7 $ depmod -a Plugin USB-RS232 converter (Prolific PL2303 chip, or FTDI) Test: $logread (excerpt): drivers/usb/serial/usb-serial.c: USB Serial support registered for pl2303 usb 2-1: pl2303 converter now attached to ttyUSB0 drivers/usb/serial/pl2303.c: Prolific PL2303 USB to serial adaptor driver or FTDI drivers/usb/serial/usb-serial.c: USB Serial support registered for FTDI USB Serial Device ftdi_sio 2-1:1.0: FTDI USB Serial Device converter detected drivers/usb/serial/ftdi_sio.c: Detected FT232BM usb 2-1: FTDI USB Serial Device converter now attached to ttyUSB0 usbcore: registered new interface driver ftdi_sio drivers/usb/serial/ftdi_sio.c: v1.4.3:USB FTDI Serial Converters Driver root@LKG300DB0:~$ lsmod (excerpt) Module Size Used by pl2303 16132 0 usbserial 25392 1 pl2303 or FTDI ftdi_sio 23464 0 root@LKG649492:~$ lsusb Bus 3 Device 1: ID 0000:0000 Bus 1 Device 3: ID 090c:1000 Feiya Technology Corp. Bus 1 Device 4: ID 046d:09a4 Logitech, Inc. Bus 1 Device 1: ID 0000:0000 Bus 2 Device 3: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port Bus 2 Device 1: ID 0000:0000 or FTDI Bus 2 Device 2: ID 0403:6001 Future Technology Devices International, Ltd 8-bit FIFO
WebCam support
Webcam support for Video 4 Linux Webcams and Logitech E3500. All module must be compiled together. The kernel modules provided by the ipkg repository are not complete.
$ ipkg install kernel-module-usbvideo # ver. 2.6.21.7 + kernel-module v4l1-compat.ko # ver. 2.6.21.7 + kernel-module-v4l2-common # ver. 2.6.21.7 + kernel-module videodev.ko # ver. 2.6.21.7 kernel-module uvc/uvcvideo.ko # ver. 2.6.21.7 kernel-module v4l2-compat-ioctl32.ko # ver. 2.6.21.7 depmod -a uvccapture must be compiled on your own, for Logitech E3500 WebCam /opt/bin/uvccapture needs /lib/modules/2.6.21.7/kernel/drivers/media/video/uvc/uvcvideo.ko /lib/modules/2.6.21.7/kernel/drivers/media/video/v4l2-compat-ioctl32.ko $ ipkg install libjpeg62 Test: root@LKG649492:~$ lsusb Bus 3 Device 1: ID 0000:0000 Bus 1 Device 3: ID 090c:1000 Feiya Technology Corp. Bus 1 Device 4: ID 046d:09a4 Logitech, Inc. Bus 1 Device 1: ID 0000:0000 Bus 2 Device 3: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port Bus 2 Device 1: ID 0000:0000 root@LKG649492:~$ lsmod (excerpt) Module Size Used by uvcvideo 51980 0 v4l2_compat_ioctl32 480 1 uvcvideo videodev 32960 1 uvcvideo v4l1_compat 12580 2 uvcvideo,videodev Alternativ video capture programs in the repository are: w3cam webcam-server
NTP client and TimeZone data
In order to alway have an accurate time in your NSLU2, you need access to a NTP server, and the timezone data. The package will start immediately the client daemon (test with ps) and installs a coldstart script in /etc/init.d/ntpclient and a link in /etc/rc2.d/S65ntpclient.
$ ipkg install tzdata # ver. 2007e-r1, Time Zone support $ ipkg install tzdata-europe # ver. 2007e-r1 $ ln -s /usr/share/zoneinfo/Europe/Berlin /etc/localtime $ unset TZ $ ipkg install ntpclient # ver. 2003_194-r1 Adding system startup for /etc/init.d/ntpclient. $ ipkg install ntp-doc # ver. 4.2.2p3-r1 $ ps 1586 root 704 S /sbin/ntpclient -l -i 600 -h pool.ntp.org $ ls -ls /etc/rc2.d/S65ntpclient 0 lrwxrwxrwx 1 root root 19 Feb 22 11:32 /etc/rc2.d/S65ntpclient -> ../init.d/ntpclient -h hostname (mandatory) NTP server, against which to measure system time -i interval check time every interval seconds (default 600) -l attempt to lock local clock to server using adjtimex(2)
sftp server for access from WinSCP, FileZilla or Nautilus
WinSCP for Win32 is the easiest to use program. An alternitive on Linux is the access via sftp, either from Gnome Nautilus or FileZilla. On Mac OS X use also FileZilla.
$ ipkg install openssh-sftp $ ipkg install openssh-sftp-server $ ps 1709 root 592 S sh -c /usr/libexec/sftp-server 1710 root 680 S /usr/libexec/sftp-server use: sftp://root@192.168.17.xxx
GNUplot
In order to generate a nice looking diagram, GNUplot is a good program. But for nice looking fonts you need also freetype.
$ ipkg-opt install gnuplot # ver. 4.2.6-1 + libgd # ver. 2.0.35.5 + libjpeg # ver. 6b-3 + freetype # ver. 2.3.6-1 + fontconfig # ver. 2.5.0-0 + expat # ver. 2.0.1-1 + gconv-modules # ver. 2.5-1 $ ikpg-opt install libpng # ver. 1.2.42-1 $ ipkg-opt install ttf-bitstream-vera # ver. 1.10-1, use 9 pt, title 12 pt $ ipkg install gnuplot.doc # ver. 4.2.0-r1
Tuning the system
Thera are some parameters, which could be adjusted.
Tick Mark frequency, /etc/syslog.conf
If you have choosen turnup memstick the system log file is written in a RAM disk. The parameters can be changes in a file /etc/syslog.conf. The log file can be read via logread.
Edit MARKINT 20 -> 60 # write tick marks every 60 minutes only
Adduser rudi
$ adduser rudi Enter new password /home/rudi # new folder is created $ ikpg install sudo # ver. 1.6.8p12-r3 $ ln -s /usr/bin/sudo /opt/bin/sudo # avoid start problem $ ikpg install sudo-doc Edit /etc/sudoers, add line: rudi ALL=(ALL) ALL Edit /etc/group # add rudi after the colon to adm, dialout, sudo, www-data, video $ reboot # otherwise the changes to /etc/group will not be effective
Add utility dfu (=date;free;uptime;uname -a)
In order to get a quick overview about the Linux status I combined 4 utilities to one dfu.
$ sudo touch /bin/dfu # create empty file
Edit the following content:
# dfu, 2010-03-16 RudolfReuter
date;free;uptime;uname -a
$ sudo chmod a+x /bin/dfu # make executable
Example:
rudi@LKG95AC9E:~$ dfu
Fri Apr 30 06:01:04 CEST 2010
total used free shared buffers
Mem: 30376 26172 4204 0 1244
Swap: 136544 88 136456
Total: 166920 26260 140660
06:01:04 up 3 days, 18:56, load average: 0.13, 0.03, 0.00
Linux LKG95AC9E 2.6.21.7 #1 PREEMPT Mon Dec 24 23:12:24 UTC 2007 armv5teb unknown
Info's to SlugOS 4.8 beta
Note:
in OpenSlug 4.8 beta the disk leds do not turn on or flash when there is a disk attached. No lights. Just the power and ethernet leds work.
For access to the NSLU2 box via terminal, PUTTY is used (Win32 and Linux), for file transfer use WinSCP (Win32), or Nautilus (Linux), or FireFTP in Firefox. In case of Nautilus or FireFTP use, a sftp server must be setup under SlugOS.
System Control
In order to see the RAM and SWAP use (KB), login with PUTTY and type date;free;uptime. A little SWAP use is not a problem, as long as it does not increase over time (days, weeks), if just the application is running. In case some system modification is done, SWAP space can increase.
rudi@LKG649492:~$ date;free;uptime
Fri Mar 12 06:13:48 CET 2010
total used free shared buffers
Mem: 30376 27420 2956 0 1576
Swap: 8024 0 8024
Total: 38400 27420 10980
06:13:48 up 6 min, load average: 0.07, 0.25, 0.15 # load average in 1, 5, 15 minutesIn order to check for running processes type ps and check for the existence of (the standard processes are not shown):
rudi@LKG649492:~$ ps PID Uid VmSize Stat Command 966 root 704 S /sbin/ntpclient -l -i 600 -h pool.ntp.org 979 rudi 9324 S python /home/rudi/moin/moin server standalone --start 990 rudi 3232 S /opt/bin/python /home/rudi/heizung/heizung20.py 991 root 660 S logger 997 rudi 672 S /bin/sh /home/rudi/heizung/webcam4.sh 998 root 660 S logger 1033 root 544 S /sbin/getty 115200 ttyS0 1034 root 1932 S sshd: rudi [priv] 1059 rudi 1376 S sshd: rudi@pts/0 1060 rudi 852 S -sh 1152 root 1980 S sshd: root@notty 1156 root 700 S -sh 2334 rudi 436 S sleep 20 2335 rudi 588 S sh -c /opt/bin/digitemp -q -a 2336 rudi 544 S /opt/bin/digitemp -q -a
LED's use
http://www.annuit-coeptis.net/artikel/nslu2/debian
RAM disk explanation
http://www.smallnetbuilder.com/content/view/24294/77/1/1/
-- RudolfReuter 2010-02-22 12:20:44
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