$ sed -ie '1 i\
## -*- coding: utf-8 -*-
' `find -type f`

echo "Or fher gb qevax lbhe Binygvar" | tr 'A-Za-z' 'N-ZA-Mn-za-m'
Be sure to drink your Ovaltine

$ seq 10000 | fmt -70

//tr/td[@class!="yfnc_d"]/..
//tr[td[@class!="yfnc_d"]]

//tr[td[not(@class="yfnc_d")]]
//tr/td[not(@class="yfnc_d")]/..

$ sed -n '1251 p' usacompany
HIFN

$ for line in `cat usacompany`; do echo [$line] >> yahoo.log; \
curl -sIL "http://finance.yahoo.com/q/cf?s=$line%20Cash%20Flow&annual" >> yahoo.log; done

(?<user>[^@]+) @ (?<company>[^.]+) \. (?<top_level_domain>\w{2,4})

perl -pi -e 's/ipodder/juice/g' `git grep ipodder | gawk -F: '{print $1}' | sort | uniq`

perl -pi -e 's/,([^\)\]\},\s])/, \1/g' `find -name '*.py'`

for f in `find -name '*.py' | grep Juice`; do git mv $f `echo $f | tr [A-Z] [a-z]`.bak && git mv `echo $f | tr [A-Z] [a-z]`.bak `echo $f | tr [A-Z] [a-z]`; done

irb(main):027:0> h = Hash[*"41 => 1, 42 => 4".scan(/\d+/).collect{|i| i.to_i}]
=> {41=>1, 42=>4}

>>> l = range(1, 5)
>>> dict(zip(l[::2], l[1::2]))
{1: 2, 3: 4}
>>> dict(zip(*([iter(l)]*2)))
{1: 2, 3: 4}

$ sudo apt-get build-dep ruby1.8
$ wget -O- ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.1-p376.tar.gz | tar zxv
$ cd ruby-1.9.1 && configure && make && sudo make install

with open("mydata.txt") as fp:
for line in iter(fp.readline, "STOP"):
    process_line(line)

>>> super
<type 'super'>

# ASCII space char
u"\u0020"
# HTML  
u"\u00A0"
# Chinese space char
u"\u3000"

python gmusic.py [Google 音乐专辑的 URL]

python c:\projects\gist-346011\gmusic.py http://www.google.cn/music/album?id=B3b6be8937fe6391c

for f in *.mp3; do mv $f `echo $f | md5sum | cut -c1-10`.mp3; done