command-line-arguments

问题 So far I've been using getopt_long to parse options for a command line C program. Is there a way to stop getopt_long parsing when it hits a non-option argument? If not, what's the best way to handle this in C? To give an example, I'd like to handle commands in a similar way to git, and have general arguments before a command, and command-specific arguments after it: git [general options] <command> [command options] e.g.: git --bare commit -a git -p --bare status -s -p and --bare are general

问题 Playing around with the ReadArgs package, it seems that it does not support single-argument situations. {-# LANGUAGE ScopedTypeVariables #-} import ReadArgs (readArgs) main = do (foo :: Int) <- readArgs print foo The error is (when using version 1.0): No instance for (ReadArgs.ArgumentTuple Int) arising from a use of `readArgs' My question is twofold: How does readArgs work? How can that library be adjusted to allow it to work with a single argument as well? N.B. version 1.1 of ReadArgs

问题 I've tried searching and haven't found a duplicate/similar question. How come "default" is never triggering in this case? Working on some previous homework assignments for a course to prepare for the fall, and I'm having an issue with getopt() in C. Here are the particular lines in question: while ((c = getopt(argc, argv, "i:o:")) != -1) { switch (c) { case 'i': inFile = strdup(optarg); break; case 'o': outFile = strdup(optarg); break; default: usage(); //this prints the "usage" statement and

问题 This question already has an answer here : Storing bash script argument with multiple values (1 answer) Closed 2 years ago . I have been researching on using bash scripts to process command-line arguments. I have multiple optional arguments, each of which have one or more operands. An example is: ./script.sh -f file1 file2 -s server1 server2 -f itself is optional, but must be followed by filename; -s is optional, can be used without any operands or operands. I know I can force putting "" on

问题 I'm trying to access the original command line argument string in Ruby (ie - not using the pre-split/separated ARGV array). Does anyone know how to do this? For example: $> ruby test.rb command "line" arguments I want to be able to tell if 'line' had quotes around it: "command \"line\" arguments" Any tips? Thanks in advance 回答1: As far as I can tell, ruby is not removing those double-quotes from your command line. The shell is using them to interpolate the contents as a string and pass them

问题 I have a deployment script to which i have to pass LDAP password as cmd paramater. actual password: foo\$ser"ver\\ 1 (contains three space characters: at the beginning, before 1 , and after 1 ) e.g ...bin>deployment.bat LDAPPassword= foo\$ser\"ver\\ 1 Note:There are spaces in the password as shown at the beginning. The deployment.bat calls a class to which the above parameter is passed as an argument. The problem is that the class receives 2 distinct arguments: args[0]= foo\$ser"ver\\ //The

问题 On running the following command: ant targetname -Dk1=v1 -Dk2=v2 I want the command line parameters passed down to java , like java whatever -Dk1=v1 -Dk2=v2 . I need to access these parameters from Java code with System.getProperty or System.getenv . What do I need to write in my ant build script to make this happen? Or should I take some other approach altogether? 回答1: I'm not sure exactly how you want to pass these values, but there are several mechanisms: Use <sysproperty> to pass system

问题 When writing text-oriented command line programs in Python, I often want to read either all the files passed on the command line, or (XOR) standard input (like Unix cat does, or Perl's <> ). So, I say if len(args) == 0: # result from optparse input = sys.stdin else: input = itertools.chain(*(open(a) for a in args)) Is this the Pythonic way of doing this, or did my miss some part of the library? 回答1: You need fileinput. A standard use case is: import fileinput for line in fileinput.input():

问题 I am trying to supply command line arguments to Python unittest and facing some issues. I have searched on internet and found a way to supply arguments as unittest.main(argv=[myArg]) The issue is this works fine for single command line argument but fails for more than one arguments. unittest.main(argv=[myArg1, myArg2, myArg3]) Above call fails with below error: File "/opt/python2.6.6/lib/python2.6/unittest.py", line 816, in __init__ self.parseArgs(argv) File "/opt/python2.6.6/lib/python2.6

问题 I can run Google Chrome from the command line using $ google-chrome , but what flag can I pass to open it with developer console already open, preferably open to the console tab? I checked the man page for google-chrome but it states that Google Chrome has hundreds of undocumented command-line flags that are added and removed at the whim of the developers. I'm hoping one of those undocumented flags does what I want. 回答1: The flag you're looking for is --auto-open-devtools-for-tabs. Please