backup script

#!/usr/bin/python
import os, sys, shutil, filecmp, time

#convert the standard time to pacific local time, not important but makes it easier for me to test
def getPacificTime():
    timeStruct = time.gmtime()
    hour = None
    if timeStruct[3] < 8:
        hour = 24-(8-timeStruct[3])
    else:
        hour = timeStruct[3]-8
    timeTuple = hour, timeStruct[4], timeStruct[5]
    return timeTuple


def backup_files(folderPath, destPath="/usr/backups"):
    MAXBACKUPS = 20
    #if the folderPath is a file, just copy it over. no need for fancy stuff
    if os.path.isfile(folderPath):
        shutil.copy2(folderPath, destPath)
        return true
    fufilled = False
    #if folderPath is written with a "\" at the end, remove it
    folderPath = folderPath.rstrip(os.sep)
    #acquire the destFolder, the function takes the folder name of folderPath and creates a folder in the destPath with a number attached to it
    for i in range(MAXBACKUPS):
        destPathTest = os.path.join(destPath,(os.path.basename(folderPath) + str(i)))
        if not os.path.exists(destPathTest):
            fufilled = True
            destPath = destPathTest
            break
    #if there are MAXBACKUPS number of folders than it cycles through again until it gets to the folder that is the oldest, it then deletes the folder contents and makes the destPath the empty folder
    if not fufilled:
        for i in range(MAXBACKUPS):
            destPathTest = os.path.join(destPath,(os.path.basename(folderPath) + str(i)))
            fmTime = os.path.getmtime(destPathTest)
            destPathTest = os.path.join(destPath,(os.path.basename(folderPath) + str(i+1)))
            if not os.path.exists(destPathTest):
                destPathTest = os.path.join(destPath,(os.path.basename(folderPath) + str(0)))
            ldTime = os.path.getmtime(destPathTest)
            if ldTime < fmTime:
                destPath = destPathTest
                shutil.rmtree(destPath)
                break

    os.mkdir(destPath)
    #walks through the entire directory tree of the folderPath and copies it over to destPath
    for root,dirs,files in os.walk(folderPath):
        curDestPath = os.path.join(destPath, root[len(folderPath)+1:])
        if not os.path.exists(curDestPath):
            os.mkdir(curDestPath)
        for s in dirs:
            os.mkdir(os.path.join(curDestPath, s))
        for s in files:
            tempSrc = os.path.join(root, s)
            tempDest = os.path.join(curDestPath, s)
            if os.path.exists(tempSrc):
                shutil.copy2(tempSrc, tempDest)
            else:
                msg = "error: " + tempSrc + " doesnt exist"
                print msg


SERVERPATH ="/home/theman515/SigmaServer/world"
SCREEN = "625.minecraft"
#main loop checks to see if the time to backup the world file is now and to see if the server crashed (we were running plus+ modpack, it happened a lot)
#this assumes you're running your minecraft server through a gnu screen using a launch script named "launch" without the quotes
while(1):
    timeStruct = getPacificTime()
    if (timeStruct[0] == 4 and timeStruct[1] == 0 and timeStruct[2] == 0) or (timeStruct[0] == 16 and timeStruct[1] == 0 and timeStruct[2] == 0):
        print "alerting the server, 60 seconds"
        curTime = time.time()
        os.system("screen -S " + SCREEN + " -p 0 -X stuff \"/say server is shutting down in 60 seconds\015\"")
        while time.time()-curTime<=30:
            pass
        os.system("screen -S " + SCREEN + " -p 0 -X stuff \"/say server is shutting down in 30 seconds\015\"")
        while time.time()-curTime <= 50:
            pass
        os.system("screen -S " + SCREEN + " -p 0 -X stuff \"/say server is shutting down in 10 seconds\015\"")
        while time.time()-curTime <= 60:
            pass
        print "shutting down the server"
        os.system("screen -S " + SCREEN + " -p 0 -X stuff \"stop\015\"")
        print "backing up the server"
        backup_files(SERVERPATH)
        curTime = time.time()
        while time.time()-curTime < 10:
            pass
        print "relaunching the server"
        os.system("screen -S " + SCREEN + " -p 0 -X stuff \"./launch\015\"")
        print "done"
    fil = os.popen("ps -e")
    output = ""
    #gets all the output from os.popen
    while True:
        stri = fil.readline()
        output += stri
        if stri == "":
            break
    if output.find("launch") == -1:
        msg = "server crashed, restarting"
        print msg
        os.system("screen -S " + SCREEN + " -p 0 -X stuff \"./launch\015\"")
        curTime = time.time()
        while time.time() -curTime < 1:
            pass