command-line-arguments

问题 I have an application which reads specific commands from the command line and processes the command. For Example: I have a command called "setparamval" which is used to set the parameter value. The syntax of this command while passing from the command line would look something like this: setparamval <variable_name>,<value> Supposing if I have a variable called "DESC" to which I would want to set the value as "ab cd ef gh" I am passing the command line argument as: setparamval DESC,"ab cd ef

问题 Why does it happen that a command line argument passed to a Java class seems to be automagically escaped while in an instantiated String object the escape character () is seemingly ignored. For example, if start with a string like this: SELECT * FROM my_table WHERE my_col like 'ABC_\' ESCAPE '\' And I try running it through a simple class like this: public class EscapeTest { public static void main (String[] args) { String str = "SELECT * FROM my_table WHERE " + "my_col like 'ABC_\' ESCAPE '\

问题 I'm using the argparse module for this python project. I'm looking to get the available flags out of an ArgumentParser object before calling parse_args() . Anyone have any ideas? 回答1: Got this from the source code of add_argument(): >>> import argparse >>> parser = argparse.ArgumentParser() >>> parser.add_argument('-v', '--verbosity', help='more debug info', action='store_true') _StoreTrueAction(option_strings=['-v', '--verbosity'], dest='verbosity', nargs=0, const=True, default=False, type

问题 My ultimate goal is: Drag & Drop video selection onto batch file VLC runs with selection as the playlist and closes at the end GlovePIE loads simultaneously and runs the script Computer shuts down when VLC closes User can cancel the shutdown with one key (two is fine) I tried to put this together but it fails miserably... The GlovePIE syntax does not work with a START operation, but I do not know of another way to run both programs at the same time. I tried making a bat that runs VLC.bat and

问题 If I write a Scala script (or App) that just prints out the command line arguments, I notice that it ignores all the '!' characters. For example, if my script looks like: println(args(0)) And I run it with: scala MyScript "Hello!" I get the output: Hello And if I run it with: scala MyScript "Hello! World!" I also get: Hello What's going on? What is the purpose of the ! character in arguments that causes this behaviour? 回答1: ! is history substitution. Try scala MyScript hello! with ! at EOL to

问题 I'm trying to use Torrent-Video-Player script but it doesn't works with files that contains spaces. It's a Nautilus script. #!/bin/bash xterm -e "peerflix "$1" --vlc" "test.torrent" -> OK "test test.torrent" -> Cannot execvp peerflix test : No such file or directory found 回答1: Change the line xterm -e "peerflix "$1" --vlc" to xterm -e "peerflix '$1' --vlc" or xterm -e "peerflix \"$1\" --vlc" The first form is equivalent to: xterm -e "peerflix " $1 " --vlc" It's not what you were expecting. 来源

问题 I am using a script written in Python that uses the argparse module to get it's arguments from command line. I try to modify this file as less as possible as various people work on it. Ex: script is called CLscript.py and I call it with python CLscript.py -option1 arg1 -flag1 -option2 arg2 But I'm facing the case where I would like to automate things one level higher and automatically launch this script with wide range of script-generated arguments. I would like to keep using all the existing

问题 I need to backup a MySQL database from an NSIS installer. I am missing something trivial in the scripts I tried: nsExec::Exec '"$mySqlDirectory\bin\mysqldump.exe" --user=$username --password=$password --routines $dbName --execute="source D:\$dbName.sql"' $0 nsExec::Exec '"$mySqlDirectory\bin\mysqldump.exe" --user=$username --password=$password --routines $dbName --execute="D:\$dbName.sql"' $0 nsExec::Exec '"$mySqlDirectory\bin\mysqldump.exe" --user=$username --password=$password --execute="-

问题 I'm having a hard time to write a simple batch file as powershell script. Consider this folder structure. Note the directory with the cool [1] in it... exiftool.exe Is a command utility to (for example) extract pictures from embedded MP3 tags. I uploaded its help if you need more info. oldscript.cmd exiftool -picture -b input.mp3 > output.jpg This line is the one to write in powershell. I found the syntax in a forum post from the author -picture stands for the tag to extract and -b stands for

问题 I read this question: Command Line Parser for .NET. I thought that was what I was looking for, but the library Command Line Parser Library is not Compact framework friendly... I REALLY don't want to write a CL parser and I have been drifting away from the real purpose of my little app because of this unfortunate trial. Does someone know of a library that fits the compact-framework? (preferably with simplicity and functionality like the one mentioned above) Does not matter whether version 2 or