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      • Monitoring filesystem activity under Linux with block_dump
        06/28/07
        sudo sysctl vm.block_dump=1

        or

        echo 1 > /proc/sys/vm/block_dump


        tail -f /var/log/kern.log

      • ntfs read/write with feisty
        06/24/07
        apt-get install ntfs-g3

        /etc/group
        +fuse:x:100:users

        vol_id /dev/sda1

        /etc/fstab
        UUID=5EFC7B02FC7AD42D /media/usbhdd ntfs-3g rw,users,uid=1000,guid=1000,umask=007,locale=de_AT.utf8,force 0 0user can mount but not unmount
        https://bugs.launchpad.n

      • blocking ads with squid
        06/22/07
        /etc/squid/squid.conf
        +acl ads dstdom_regex -i "/etc/squid.adservers"
        +http_access deny ads

        # INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
        update-squid-adservers.sh:
        #!/bin/sh

        ### short script that downloads a list of ad servers f

      • Internetaccess via modem
        06/21/07
        apt-get install ppp

        edit /etc/ppp/pap-secrets

        /etc/network/interfaces

        auto modem
        iface modem inet ppp
        provider modem
        /etc/ppp/peers/modem
        ttyS0
        38400
        connect "/usr/sbin/chat -v -f /etc/ppp/peers/modem.chat"
        disconn

      • Internetaccess via ISDN
        06/21/07
        apt-get install isdnutils-base

        isdnconfig - choose 1, ippp1 to prevent default gateway to ippp0

        /etc/isdn/device.ippp1:

        edit all lines marked with XXX_:

        LOCALIP=
        REMOTEIP=AAA.BBB.CCC.DDD
        LOCALMSN=''
        REMOTEMSN=XXXXX
        LEADINGZERO

      • scponly
        06/21/07
        apt-get install scponly

        gunzip /usr/share/doc/scponly/setup_chroot/setup_chroot.sh.gz
        chmod 755 /usr/share/doc/scponly/setup_chroot/setup_chroot.sh
        cd /usr/share/doc/scponly/setup_chroot/
        ./setup_chroot.sh /home/USERNAME USERNAME RELATIVE_WRITEABLE_DIR

        cp /dev/nu

      • ssh - chroot
        06/21/07
        chroot a user logging in via ssh

        apt-get install libpam-chroot

        less /usr/share/doc/libpam-chroot/examples/README.example

        /usr/share/doc/libpam-chroot/examples/setup-chrootdir-shell.sh

        /etc/security/chroot.conf:
        +USERNAME /var/chroot/sshd/home/USERNA

      • mirror my website
        06/21/07
        chmod 700 /etc/cron.daily/websitesync

        #!/bin/sh

        wget -q --mirror --no-host-directories --cut-dirs=1 --directory-prefix=/var/www \
        --user=USERNAME --password=XXXXX ftp://www.holik.at/htdocs
        I mirror to my homeserver/var/www and to prevent wget to add
        director

      • serial (ttyS) over TCP
        06/21/07
        First computer where to redirect serial via TCP:

        stty -F /dev/ttyS0 raw 9600 -echo
        nc 192.168.0.1 1111 >/dev/ttyS0 </dev/ttyS0
        Second computer receiving needs 2 serial's
        stty -F /dev/ttyS0 raw 9600 -echo
        stty -F /dev/ttyS1 raw 9600 -echo

        nc -l -p

      • Internetaccess via adsl
        06/20/07
        apt-get install pptp-linux

        i got a usb networkcard - to name it adsl i use udev and made /etc/udev/rules.d/local.rules


        SUBSYSTEMS=="usb", KERNEL=="eth*", ATTRS{idVendor}=="050d", \
        ATTRS{idProduct}==&qu

      • dnsmasq
        06/20/07
        dnsmasq with more than one interface

        [more]

        * Howto define a CNAME with dnsmasq ?


        # Configuration file for dnsmasq.
        #
        # Format is one option per line, legal options are the same
        # as the long options legal on the command line. See
        # "/u

      • raid1 with ubuntu feisty
        06/20/07
        What i want from a raid1:

        notiy if a disk fails
        This is done by mdadm

        boot degraded with only one disk
        boot degraded does not work with ubuntu, because mdadm does not start a degraded raid :-(

        my workaround is to add a bootmenue entry in grub

        tit