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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to parse JSON from Python. I recently started working with Python so I followed some stackoverflow tutorial how to parse JSON using Python and I came up with below code - #!/usr/bin/python import json j = json.loads('{"script":"#!/bin/bash echo Hello World"}') print j['script'] But whenever I run the above code, I always get this error - Traceback (most recent call last): File "json.py", line 2, in import json File "/cygdrive/c/ZookPython/json.py", line 4, in j = json.loads('{"script":"#!/bin/bash echo Hello World"}')

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: GNU bash, version 1.14.7(1) I have a script is called " abc.sh " I have to check this from abc.sh script only... inside it I have written following statement status=`ps -efww | grep -w "abc.sh" | grep -v grep | grep -v $$ | awk '{ print $2 }'` if [ ! -z "$status" ]; then echo "[`date`] : abc.sh : Process is already running" exit 1; fi I know it's wrong because every time it exits as it found its own process in 'ps' how to solve it? how can I check that script is already running or not from that script only ? 回答1: An easier way to check for a

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm currently using the serve script to serve up directories with Node.js on Windows 7. It works well in the MSYS shell or using sh , as I've put node.exe and the serve script in my ~/bin (which is on my PATH), and typing just "serve" works because of it's Shebang ( #! ) directive which tells the shell to run it with node. However, Windows Command Prompt doesn't seem to support normal files without a *.bat or *.exe extension, nor the shebang directive. Are there any registry keys or other hacks that I can get to force this behavior out of

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: My extension is supposed to load a content script, searchTopic.js, only after the page it's injected into has already fully loaded (yes, I have set "run_at" to "document_end" in the extension manifest), but in fact it's loading before all the DOM objects have been created (the crucial ones are created via some Javascript in the page). So, the question is, how can I wait until the page's Javascript has executed? Here's my manifest: "content_scripts": [ { "run_at": "document_end", "matches": ["https://groups.google.com/forum/*"], "js": [

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm using Mozilla Rhino 1.7r2 (not the JDK version), and I want to call a JS function from Java. My JS function is like this: function abc(x,y) { return x+y } How do I do this? Edit: (The JS function is in a separate file) 回答1: String script = "function abc(x,y) {return x+y;}"; Context context = Context.enter(); try { ScriptableObject scope = context.initStandardObjects(); Scriptable that = context.newObject(scope); Function fct = context.compileFunction(scope, script, "script", 1, null); Object result = fct.call( context, scope, that, new

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I already have an ssh agent set up, and I can run commands on an external server in Bash script doing stuff like: ssh blah_server "ls; pwd;" Now, what I'd really like to do is run a lot of long commands on an external server. Enclosing all of these in between quotation marks would be quite ugly, and I'd really rather avoid ssh'ing multiple times just to avoid this. So, is there a way I can do this in one go enclosed in parentheses or something? I'm looking for something along the lines of: ssh blah_server ( ls some_folder; ./someaction.sh;

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: This question already has an answer here: Unexpected operator error [duplicate] 4 answers Found this error to be quite weird because previously my script was working and but after I moved it from the server I was working on to my local machine, it stopped working and just gave me an 'unexpected operator' error. # Else if the script is being run in the arrayscripts directory, add /output/ ... elif [ $basePath == "arrayscripts" ]; then echo "$dscr has started to run." cpuPath = "`pwd`/output/cpu.binary" txtPath = "`pwd`/output/cpu

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I have a python script that uses this call to get yesterday's date in YYYY-MM-DD format: str ( date . today () - timedelta ( days = 1 ))) It works most of the time, but when the script ran this morning at 2013-03-11 0:35 CDT it returned "2013-03-09" instead of "2013-03-10" . Presumably daylight saving time (which started yesterday) is to blame. I guess the way timedelta(days=1) is implemented it subtracted 24 hours, and 24 hours before 2013-03-11 0:35 CDT was 2013-03-09 23:35 CST , which led to the result of "2013-03-09" . So what

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: What does the if __name__ == "__main__": do? # Threading example import time, thread def myfunction(string, sleeptime, lock, *args): while True: lock.acquire() time.sleep(sleeptime) lock.release() time.sleep(sleeptime) if __name__ == "__main__": lock = thread.allocate_lock() thread.start_new_thread(myfunction, ("Thread #: 1", 2, lock)) thread.start_new_thread(myfunction, ("Thread #: 2", 2, lock)) 回答1: When the Python interpreter reads a source file, it executes all of the code found in it. Before executing the code, it will define a few

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Say we usually access via http://localhost/index.php?a=1&b=2&c=3 How do we execute the same in linux command prompt? php -e index.php But what about passing the $_GET variables? Maybe something like php -e index.php --a 1 --b 2 --c 3? Doubt that'll work. Thank you! 回答1: Typically, for passing arguments to a command line script, you will use either argv global variable or getopt : // bash command: // php -e myscript.php hello echo $argv[1]; // prints hello // bash command: // php -e myscript.php -f=world $opts = getopt('f:'); echo $opts['f'];