command

问题 In Bash, I would like an if statement which is based of the exit code of running a command. For example: #!/bin/bash if [ ./success.sh ]; then echo "First: success!" else echo "First: failure!" fi if [ ./failure.sh ]; then echo "Second: success!" else echo "Second: failure!" fi success.sh #!/bin/bash exit 0 failure.sh #!/bin/bash exit 1 This should print out: First: success! Second: failure! How would I achieve this? Thanks! 回答1: Just remove the brackets: #!/bin/bash if ./success.sh; then

问题 I'm developing an extension for Visual Studio 2017 using a C# VSIX project. I need to create a variable number of commands based on settings in a .ini file. I thought to create a maximum number of commands (because in a VSIX project every command needs a new .cs file), and enable only the commands written in the .ini file. Unfortunately I don't know how to disable a command. I need to enable the commands when a boolean becomes true. I've seen that I need to use the OleMenuCommand class, but I

问题 I develop a WPF application, obviously, I use MVVM pattern. Without an external library (MvvmCross, MvvmLight, ...) And I've tried to implement ICommand : Option 1 public class Command : ICommand { private readonly Func<bool> _canExecute; private readonly Action _action; public Command1(Action action, Func<bool> canExecute) { _action = action; _canExecute = canExecute; } public event EventHandler CanExecuteChanged { add { CommandManager.RequerySuggested += value; } remove { CommandManager

问题 How can I use if else statement to echo if value more than 1? @echo off setlocal set "sql=c:\xampp\mysql\bin\mysql.exe" for /f "usebackq" %%a in (`%sql% -u root -ss -e "select COUNT(*) FROM mytable" mydatabase`) do set TESTVAR=%%a if %TESTVAR% GEQ 1 (echo Database has already existed.) else echo import pause 回答1: Kind of like this: @echo off setlocal set "sql=c:\xampp\mysql\bin\mysql.exe" for /f "usebackq" %%a in (`%sql% -u root -ss -e "select COUNT^(*^) FROM browser" form_generator`) do set

问题 I'd like to open outlook via command with parameters and launch macro once is opened... this code open outlook with parameters outlook.exe /c ipm.note /m "m@m.m&subject=abc&body=123" /a "f:\attach.txt" if I add code to launch a macro, outlook won't open and give me an error... what's wrong in this code ? outlook.exe /c ipm.note /m "m@m.m,&subject=abc&body=123" /a "f:\attach.txt" /autorun mymacro 回答1: You can't run a macro using a command-line switch. The only relevant command is /altvba, but

问题 Problem with doing process in Swift 3, It's not working, I click and nothing is happening. let open = Process() open.launchPath = "/usr/bin/openssl" open.arguments = ["openssl enc -aes-256-cbc -d -in \"" + existing.stringValue + "\" -out \"" + new.stringValue + "/" + name.stringValue + "\""] open.launch() open.waitUntilExit() How do I create a process with arguments in Swift? 回答1: With this function, you can pass the arguments as a string. func shell(at: String, _ args: String) { let task =

问题 Is there a way to programmatically send a command to Slack via the API? I'm successfully posting a message using var postingResponse = client.UploadValues("https://slack.com/api/chat.postMessage", "POST", new NameValueCollection() { {"token","<token>"}, {"channel","<ID>"}, {"text", "/mycommand hello" }, {"username","<username>" }, {"link_names", "true" }, {"parse", "full" } }); This works well but the /mycommand hello is just printed as text instead of executing as a command. I tried adding a

问题 Is there a way to programmatically send a command to Slack via the API? I'm successfully posting a message using var postingResponse = client.UploadValues("https://slack.com/api/chat.postMessage", "POST", new NameValueCollection() { {"token","<token>"}, {"channel","<ID>"}, {"text", "/mycommand hello" }, {"username","<username>" }, {"link_names", "true" }, {"parse", "full" } }); This works well but the /mycommand hello is just printed as text instead of executing as a command. I tried adding a

问题 I have series of directories with (mostly) video files in them, say test1 1.mpg 2.avi 3.mpeg junk.sh test2 123.avi 432.avi 432.srt test3 asdf.mpg qwerty.mpeg I create a variable ( video_dir ) with the directory names (based on other parameters) and use that with find to generate the basic list. I then filter based on another variable ( video_type ) for file types (because there is sometimes non-video files in the dirs) piping it through egrep . Then I shuffle the list around and save it out

问题 How to log/measure the size of Redis command's queue. The Redis is single-threaded, so it runs commands sequentially, as I guess there is command queue there, where the incoming commands are stored, and executed one by one. The SLOWLOG command only shows the execution time, so the question is, is there a way to get how long the command was in queue before starting of execution. 回答1: AFAIK, there is no command queue in Redis. The event loop is notified when there is something to read on a