command

问题 I have a Python 3 code that is supposed to record video. Unfortunately, I do not want it in .h264, I need it to convert to .mp4. Using other StackOverflow threads as a template (specifically this one), I thought the easiest way to do this would have been to use subprocess.Popen to insert MP4Box -add filename.h264 filename.mp4 into the terminal and have it do it for me automatically. Unfortunately, the Python script doesn't do anything and I don't get any error messages, so I don't know what's

问题 I have a small script that I got from the net. This script basically reads the information (ip addresses) from a file and pings them and then inserts the results in a text file. This script does exactly what I need but the issue is that instead of ping I need “pathping” which I can change in the script. The issue is that during pathping if there is a delay the script sits for like 3 minutes or maybe 5 minute depending on the response before moving to the next IP address. All I want is some

问题 I wanted to broadcast message to all the bash terminal on my raspbian. I understand that there's wall command to perform the step and I could use os.system python module to execute the command. However, running the command "wall text.txt" requires sudo privilege. Is there any way to use wall command with stdin from python? 回答1: It is indeed required to be a superuser to run wall with an input file, man says: NAME wall - write a message to users SYNOPSIS wall [file] DESCRIPTION Wall displays

问题 I've read in various places that I can use Windows batch file for to grab the output of a command and put it in a variable, like this: FOR /F %%G IN ('foo-command') DO SET FOO=%%G Great. So my foo-command is actually C:\Program Files\Foo\foo.bat , and this is stored in the FOO_BAT variable. And it takes a parameter bar with value blah blah='foobar' blah . So I try that: FOR /F %%G IN ('%FOO_BAT% -bar "blah blah='foobar' blah"') DO SET FOO=%%G I get a lovely 'C:\Program' is not recognized... .

问题 I have a ListView with a CheckBox inside of the ListView's DataTemple. I was shown how to make the Command work. I would like to capture the ListView SelectedItem to pass as a parameter to the Command, but I don't have it right... <ListView x:Name="lvReferralSource" ItemsSource="{Binding ReferralObsCollection}" Style="{StaticResource TypeListViewStyle}"> <ListView.ItemTemplate> <DataTemplate> <Grid Width="200"> <Grid.ColumnDefinitions> <ColumnDefinition Width="*"/> <ColumnDefinition Width=

问题 This question already has answers here : Why does FOR loop command not work in a batch file which works on Windows command prompt? (3 answers) Closed last year . Due to problem with WINDOWS DEFENDER I need do the following: for /r "%appdata%\..\Local\MyProg\2.0" %D IN ("*MyProgram.exe") DO "%~fD It works perfect in COMMAND PROMPT but not in batch-file or cmd-file - why? How do I make in a excutable file as a Batch-file or ".cmd"? 回答1: When running for loops in a batch file, you need to use an

问题 So I'm trying to start a program as notepad or word, but I'm not sure how to do it 回答1: you can write something like C:>notepad or "c:\Program files\MSOffice\World" both call are identic. But path to C:\Windows\notepad.exe is to write in envirinment variable %PATH%. 来源： https://stackoverflow.com/questions/20167958/how-to-start-a-specific-file-as-notepad-or-word-in-cmd

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . I am looking for a perl command where lines starting with a string are printed. For example, if I wanted to print all lines starting with "1234", what would that command look like? Sed? Awk? Grep? 回答1: perl -ne

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . I'm trying to build a command line interpreter that implements "cd" command in linux. I don't know how the function that suppose to do that shoud work. I know that this question has already been answered here: Changing the current working directory in Java? But I'm new to Java and

问题 This question already has an answer here : Run current bash script in background (1 answer) UNIX script to check if httpd service is on or off and if off send a email [duplicate] Closed 3 years ago . Script to check if httpd is on or off #!/bin/bash service=service_name email=user@domain.com host=`hostname -f` if (( $(ps -ef | grep -v grep | grep $service | wc -l) > 0 )) then echo "$service is running" else /etc/init.d/$service start if (( $(ps -ef | grep -v grep | grep $service | wc -l) > 0