MD

http://en.wikipedia.org/wiki/Markdown
http://www.codinghorror.com/blog/2012/10/the-future-of-markdown.html

http://ikiwiki.info

JSON ftw

"jq is a lightweight and flexible command-line JSON processor."
http://stedolan.github.com/jq/

moving faster in Bash

http://teohm.github.com/blog/2012/01/04/shortcuts-to-move-faster-in-bash-command-line/

sshd config

http://www.cyberciti.biz/tips/linux-unix-bsd-openssh-server-best-practices.html

SSH SOCKS proxy configured in ~/.ssh/config (instead of Bash alias)

http://nerderati.com/2011/03/simplify-your-life-with-an-ssh-config-file/ http://linux.die.net/man/5/ssh_config

I like this better than aliases in .bashrc.
I now have in my ~/.ssh/config

Host outside
        HostName  outside.dyndns.org
        Port  2222
        User  user
        DynamicForward  3333

Host inside
        HostName  192.168.x.y
        User  user
        DynamicForward  3333

Issuing

ssh outside

now is equivalent to

ssh -D 3333 -p 2222 user@outside.dyndns.org

(I have to add -N though myself everytime if I don't want a shell... at least I could not find a respective config option.)

At first I thought I noticed some weird behavior going back and forth between aliases and the config file, but this owed more to a strict '(re-)connect allowed only thrice in 60 minutes' rule and was ok when using different destinations.

copy modules needed for chroot environment commands from real root

echo '#!/bin/bash' > /tmp/cp2chroot.sh

mkdir -p /www/chroot/newchuser/usr/lib64 /www/chroot/newchuser/lib64

ldd /usr/bin/scp | \
perl -ne 'my $dest_dir = "/www/chroot/newchuser"; \
my @line = split(/\n/, $_); \
foreach (@line) { $_ =~ s/.*=>(.*)/$1/; $_ =~ s/^\s+(.*) \(.*\)/$1/; \ 
print "cp $_ $dest_dir$_\n"; }' \
>> /tmp/cp2chroot.sh

UMTS USB stick ("congstar surfstick") under Ubuntu 11.04 natty with network-manager 0.8.4, network-manager-gnome 0.8.4

props:

https://www.heise.de/artikel-archiv/ct/2011/16/134_UMTS-Sticks-unter-Linux

prerequisites:

network-manager
network-manager-gnome

connect USB stick

$ lsusb

... ID 19d2:0039 ONDA Communication S.p.A.

and watch

/var/log/syslog

or the like if the modem part of the device is properly recognized.

... usb_modeswitch: switching 19d2:2000 (congstar Surfstick: congstar Surfstick)

also check

$ lsmod

usb_wwan               19711  1 option
usbserial              37116  7 option,usb_wwan

start network-manager

# NetworkManager

and configure away. the 'new connection' wizard worked for me, I only had to enter my PIN and select 'Connect automatically'.

Number: *99#
Username: t-mobile
Password: tm

APN: internet.t-mobile
PIN: ****

$ ifconfig

ppp0

$ ps -efd

/usr/sbin/modem-manager
/usr/sbin/pppd nodetach lock nodefaultroute user t-mobile ttyUSB2 noipdefault noauth usepeerdns lcp-echo-failure 0 lcp-echo-interval 0 ipparam /org/freedesktop/NetworkManager/PPP/0 plugin /usr/lib/pppd/2.4.5/nm-pppd-plugin.so