Question

我将plist文件保存到

/Library/LaunchDaemons/local.WiFiDaemon.plist

以下是代码：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertropertyList-1.0.dtd">
<plist version="1.0">
<dict>
        <key>Disabled</key>
        <false/>
        <key>GroupName</key>
        <string>staff</string>
        <key>InitGroups</key>
        <true/>
        <key>Label</key>
        <string>local.job</string>
        <key>ProgramArguments</key>
        <array>
                <string>python</string>
                <string>/Library/Application Support/PythonDaemons/PythonTest.py</string>
        </array>
        <key>RunAtLoad</key>
        <true/>
        <key>StandardErrorPath</key>
        <string>/tmp/local.job.err</string>
        <key>StandardOutPath</key>
        <string>/tmp/local.job.out</string>
        <key>UserName</key>
        <string>myuser</string>
</dict>

该文件应该执行一个python脚本，它只是ping谷歌并将结果保存到文本文件中：

/Library/Application Support/PythonDaemons/Ping_log.txt

问题是python脚本给出了一个错误，说它没有文件的权限。当我从命令行运行脚本时，一切正常，没有任何特殊权限。我在这里错过了什么？

这是python脚本：

import subprocess, datetime, time

host = "www.google.com"
ping = subprocess.Popen(
                        ["ping", "-c", "4", host],
                        stdout = subprocess.PIPE,
                        stderr = subprocess.PIPE)
out, error = ping.communicate()
with open('PingOut.txt', 'w') as outFile:
    outFile.write(out)
temp = out.split('\n')
parsed = temp[len(temp)-2].split('/')
min = parsed[len(parsed)-4].split(' ')[2]
avg = parsed[len(parsed)-3]
max = parsed[len(parsed)-2]

print "min: " + str(min) + "avg: " + str(avg) + "max: " + str(max)

with open('Ping_log.txt', 'a') as f:
 f.write(str(datetime.datetime.now()) + ',' + str(min) + ',' + str(avg) + ',' + str(max))

PythonDaemons文件夹的权限是“drw-rw-rw - ”。

Answer 1

提供日志文件的完整路径名：

with open('/Library/Application Support/PythonDaemons/Ping_log.txt', 'a') as f:

或者在plist中设置工作目录：

<key>WorkingDirectory</key>
<string>/Library/Application Support/PythonDaemons</string>

否则，它默认为您没有写入权限的系统目录。

如何使用正确的文件权限在MAC OS 10.8.5上运行plist守护程序

1 个答案: