Absolute value and sign

puts -2.0.abs # = 2.0: absolute valueputs -2.0=0.0 # = -1: use = operator to compute sign of a number...

网络   发表于2019-06-19 198人看过

Find symbolic links and show where they point to

'''PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2--------------------------------------------1. This LI...

网络   发表于2019-06-19 72人看过

Encode command in string

#!/usr/bin/env ruby# a nice greeting for myValueputs 'Hey, myValue, I'm running ' 'ruby --version'...

网络   发表于2019-06-19 160人看过

Linux ImageMagik的Mogrify压缩及锐化

find /var/www/ -name "*.jpg" -exec mogrify -quality 80 -sharpen .14 {} ;find * -name "*.jpg" -exec mo...

网络   发表于2019-06-19 74人看过

Variables in a list

X = [1, 2, 3]L = ['a', X, 'b'] # embed references to X's objectD = {'x':X, 'y':2}X[1] = 'surprise' # ...

网络   发表于2019-06-19 164人看过

shell脚本判断进程是否存在,若不存在则启动进程

新浦京娱乐场官网,一段小脚本,通过pid的文件是否存在,来判断进程是否已经...

网络   发表于2019-06-19 166人看过

新浦京娱乐场官网Access array embedded within a hash

people = { 'fred' = { 'name' = 'F', 'age' = 63, 'gender' = 'male', 'favorite painters' = ['A', 'B', '...

网络   发表于2019-06-19 142人看过

List insert(i, x)

#Insert an item at a given position. The first argument is the index of the element #before which to ...

网络   发表于2019-06-19 88人看过

String interpolation with calculation

number = 5puts 'The number prior to #{number} is #{number-1}.'...

网络   发表于2019-06-19 140人看过

定时关机

新浦京娱乐场官网,一个可以定时关机的.vbs脚本,很简单,不过挺实用 restTi...

网络   发表于2019-06-19 130人看过

Add new entry to a dictionary

d2 = {'spam': 2, 'ham': 1, 'eggs': 3} # make a dictionaryprint d2 # order is scrambledd2['ham'] = ['g...

网络   发表于2019-06-19 167人看过

新浦京娱乐场官网you can use the length method on hash

pizza = {'first_topping' = 'pepperoni', 'second_topping' = 'sausage'}puts pizza.length...

网络   发表于2019-06-19 71人看过

shell通过进程文件名剖断进度是不是留存

新浦京娱乐场官网,如下脚本通过进程文件名判断进程是否存在 ps -ef | grep mi...

网络   发表于2019-06-19 70人看过

Use else in exception handle

import sysfor arg in sys.argv[1:]: try: f = open(arg, 'r') except IOError: print 'cannot open', arg e...

网络   发表于2019-06-19 150人看过

生成KVM虚拟机mac地址

MACADDR="52:54:$(dd if=/dev/urandom count=1 2/dev/null | md5sum | sed 's/^\(..\)\(..\)\(..\)\(..\).*$...

网络   发表于2019-06-19 73人看过