slack-post-pacman-updates.py

#!/usr/bin/python2
# configure
slack_api_token="PLEASE_REPLACE_YOUR_SLACK_BOT_API_TOKEN"
slack_channel="update-notify"
server_name="main vm"

import os
os.system("echo n | LANG=C pacman -Syu > /tmp/pacman-result.txt 2> /dev/null")
import requests
fp = open("/tmp/pacman-result.txt","r")
while(True):
        text = fp.readline()
        if(text[0:23]==" there is nothing to do"):
                exit()
        if(text[0:8]=="Packages"):
                break
fp.close()
post = "ArchLinux("+server_name+") Updates\n"
packages=(' '.join(text.split(" ")[2:])).split("  ")
for package in packages:
        post += "- "+package+"\n"
requests.post("https://slack.com/api/chat.postMessage",data={
        "text":post,
        "token":slack_api_token,
        "channel":slack_channel
})