shellfly

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shellfly

C-M-h  mark-defun

C-x C-space pop-global-mark

modify-syntax-entry _ w

M-x find-name-dired: you will be prompted for a root directory and a filename pattern.
Press t to "toggle mark" for all files found.
Press Q for "Query-Replace in Files...": you will be prompted for query/substitution regexps.

Proceed as with query-replace-regexp: SPACE to replace and move to next match, n to skip a match, etc.

shellfly

grep -rl {text} app | xargs sed -i"" -e 's/{text}/{replaced_text}/g'

shellfly

# Rsa Demo
import math
import random

def to_binary(n):
    if n / 2 == 0:
        return str(n)
    return to_binary(n/2) + str(n%2)

assert to_binary(4) == '100'

shellfly

Depends on http://github.com/bdauvergne/python-oath

pip install -e "git://github.com/bdauvergne/python-oath.git#egg=oath-dev"

1: Generate key, install key

Generate a secret key (and for fun, the QR code URL that can be imported by the Google Authenticator scanner) with gen_google_code.py.

See http://www.google.com/support/accounts/bin/answer.py?answer=1066447 for what to do with this.

shellfly

(defun goto-template()
"Jump to correspondence Django template file"
(interactive)
(let (tmplName projectDir appName)
  (setq projectDir "/home/shellfly/project/src")
  (setq tmplName (thing-at-point 'filename))
  (setq appName (car (split-string tmplName "/")))
  (find-file (concat
               (file-name-as-directory projectDir)
               (file-name-as-directory appName)

shellfly

tcpdump -A -vvvv -s 9999 -i eth0 port 80 > /tmp/sample

shellfly

Debian 7, Postgres 9.4

安装完后默认生成两个用户，一个系统用户postgres，一个数据库用户postgres，都没有密码，

系统用户postgres不要设置密码，修改数据库用户postgres密码

1. $ sudo su postgres
2. $ psql
3. $ \password

shellfly

生成项目

rails new project_name

修改Gemfile source https://ruby.taobao.org

#安装Gems bundle install

生成schema

shellfly

config.vm.provider :virtualbox do |vb|
  vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
end