前言
上周電腦重裝，換了ubuntu 16.04，想起來之前上課老師也是ubuntu而且他還提到他桌面是他自己寫的個小腳本實現的自動更換桌面壁紙的，昨天晚上心血來潮自己網上搜了點資料實現了一下 = =
功能
功能的話，是從必應壁紙爬取最新的那張壁紙，然后本來因為我怕電腦又放了太多東西，就設置了個圖片最大的數目，到達這個閾值就刪除所有的圖片= =|| 通過python的os模塊，設置壁紙，
這里可以參考：how-to-change-desktop-background-from-command-line-in-unity , 還有就是考慮到剛開機時我不一定連得上網（辛酸 T_T)，所以設置了一個爬取的間隔
代碼
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# -*- coding: utf-8 -*-#!/usr/bin/python#!/bin/bash# ---------------------------------------------------------- ## This is a script which can change background automatically ## every time the system starts. ## author: Huang Zhenyang ## email: 745125931@qq.com ## ---------------------------------------------------------- ## ----- Import ----- #import osimport reimport urllibimport timeimport socket# --- End Import --- #class Spider(object): """ This is the spider to get the img from being """ def __init__( self, img_matched_pattern_para, url_para, file_name_para ): """ init function :param img_matched_pattern_para: the pattern to match a img :param url_para: url to crawler :param file_name_para: file name """ self.img_matched_pattern = img_matched_pattern_para self.url = url_para self.file_name = file_name_para def get_img(self): """ download the image :return: """ html = self.get_html() img_pos = re.search(self.img_matched_pattern, html) img_page_href = self.url + img_pos.group()[6:-7] + "download" urllib.urlretrieve(img_page_href, self.file_name) def get_html(self): """ return the html :return: page's html <type 'str'> """ page = urllib.urlopen(self.url) html = page.read() return htmlclass Controller(object): """ This is the controller to control the spider's parameters. """ def __init__(self, pattern_href_para, path_para, url_para, img_max_num_para): """ :param pattern_href_para: href's match pattern :param path_para: path to save images :param url_para: url :param img_max_num_para: max number that the """ self.pattern_href = pattern_href_para self.path = path_para self.url = url_para self.img_max_num = img_max_num_para self.file_name = "" self.init_file_name = "0.jpg" self.file_extension_name = ".jpg" def judge(self): """ judge if the number of images is grater than img_max_num. if true, delete all of them and then run spider, else directly run spider. Also, we should set the file name. :return: """ root = None _dirs = None files = None for root, _dirs, files in os.walk(self.path, True): pass files_len = len(files) if files_len == 10: for i in range(0, 10): os.remove(root + files[i]) self.file_name = self.path + self.init_file_name else: self.file_name = self.path + str(files_len) + self.file_extension_name def run_spider(self): """ run spider. TODO: This function needs to be modified in the future which makes these two class coupling too much. :return: """ # In case user's computer hasn't connect the internet. for i in range(0, 60): try: spider = Spider(self.pattern_href, self.url, self.file_name) spider.get_img() break except IOError as e: print "Connection error: %s" % e time.sleep(60) continue except Exception as e: print "Connection error: %s" % e time.sleep(60) continue c_path = '"file://' + self.file_name + '"' # absolute path # call system command to change the gnome background os.system('gsettings set org.gnome.desktop.background picture-uri ' + c_path) print "gsettings set org.gnome.desktop.background picture-uri " + c_pathif __name__ == '__main__': pattern_href = r'href="/photo/.*?" rel="external nofollow" ' path = '/home/hzy/圖片/backgrounds/' url = 'https://bing.ioliu.cn/' img_max_num = 10 controller = Controller(pattern_href, path, url, img_max_num) controller.judge() controller.run_spider() |
開機自啟動
在/home/hzy/.config/autostart中，新建一個xxx.desktop的文件，內容如下：
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[Desktop Entry]Name=autoChangeBackgroundImgComment=Python ProgramExec=python /home/hzy/Script/autoChangeBackgroundImg/autoChangeBackgroundImg.pyIcon=/home/hzy/Script/autoChangeBackgroundImg/autoChangeBackgroundImg.pngTerminal=falseMultipleArgs=falseType=ApplicationCategories=Application;Development;StartupNotify=true |
說明：
1. Exec 后面的路徑就是該腳本的路徑
2. Icon的話可以自己隨便找個圖片，設置成該路徑即可
以上這篇ubuntu 16.04LTS 開機啟動自動更換壁紙的實現方法就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持服務器之家。
原文鏈接：http://blog.csdn.net/qq_35056292/article/details/79225376
