I've tried both launching /Applications/Utilities/Terminal.app/Contents/MacOS/Terminal as a process and using std::system to launch it from sh script (open -a /Applications/Utilities/Terminal.app/Contents/MacOS/Terminal) with different arguments (detsdir as argument, cd destdir etc.). Nothing works. It either opens in ~/, or it says "destdir is a directory` and logs off.
I've also tried launching it as a process with destdir set as working directory (using QProcess::startDetached). No luck either, it opens in ~/.
You can do it like this, with osascript:
osascript -e "tell application \"Terminal\" to do script \"cd ~/Desktop\""
This will create a new terminal window with working directory ~/Desktop.
QProcess has method setWorkingDirectory()
Related
I am trying to have my program change directory (to where the user wishes to) but I am unable to navigate there and create a file? It appears that I am able to navigate there but when I get to the next system call it returns back to the current directory
Is there a way to set where my program cwd is pointing to?
std::string s1 = "cd " + userDirectory;
system(s1.c_str());
system("dir > test.txt");
SetCurrentDirectory Win32 on Windows.
chdir() / _chdir for POSIX (a common C API available on many OS:es).
boost/std::filesystem current_path() for C++ (std in C++17).
The system function starts a new command interpreter as a new process. And then runs the commands in that command interpreter. And as the cd command is a built-in command it will only apply to that command interpreter process, not your process.
You have a couple of solutions you can try:
Put the commands (cd and dir and everything else) in to a script file that you run.
Change the working directory of your process.
On Windows you can change working directory using SetCurrentDirectoryW function.
I am using C++ on Ubuntu. I have been using the command:
system("mkdir new_folder");
to make a new folder called new_folder. However, if that folder already exists, C++ outputs an error message (and continues to run afterwards).
Is there a way to stop the error message from printing out?
For this particular command use mkdir -p new_folder.
Generally, you want to fork your process and on one of the branches redirect stdout and stderr to /dev/null or similar then do exec to replace the process with the new one.
I tried the following code, to communicate with the command line from c++ code.
#include<iostream>
#include<cv.h>
int main()
{
system("gnome-terminal");
system("cd");
}
The gnome-terminal command is executing fine. After I close the terminal, when am expecting the cd to execute, however, is not happening. Could you please help me and point out the reason? Thanks. I was expecting the function to make the cmd go down to the home directory
, but it did not. am working in linux
I tried it even by removing gnome. simple cd is not working. am I doing something rong>?
If I try ls, it seems to be working fine!
My main aim is to open a new terminal, and execute commands on that new terminal through the present program that opened the new terminal. Could you please tell me how I can achieve this??
If you want to run a program and wait for it to finish before executing next line, take a look at this page and example code here: http://www.thegeekstuff.com/2012/03/c-process-control-functions/
But if you want to run gnome-terminal and execute a command in newly created window, do this:
system("gnome-terminal -x sh -c 'cd /tmp ; ls -la'");
The system function creates a shell child process to execute the specified command.
cd is a shell command which changes the current working directory of that shell process only.
So the child's cd probably works fine, but it has no effect on your C++ program, which is a different process.
Instead, you probably want to look at the Linux system call chdir.
Thanks for your help!! This command worked perfectly fine from this link
https://superuser.com/questions/198015/open-gnome-terminal-programmatically-and-execute-commands-after-bashrc-was-execu
gnome-terminal -x sh -c 'command1; command2; exec bash'
and I entered the respective commands in the new window. But to change the working directory in the shell am working o, I haven't still figured that out.
I have a question regarding executing shell commands in c++. I'm building an application in winforms, vs 2008. My application has a button, when clicked should decode a binary file to a .csv file. I can decode files by first going to the right directory (cd Test_Copy2) and then execute a command in the command prompt (java -jar tool.jar -b x.fit x.csv). I tried a lot of different stuff but unfortunately got none to work!
I tried using:
system, _popen, ShellExecute(NULL, L"open", L"C:\\WINDOWS\\system32\\cmd.exe ", L"java -jar Tool.jar -b x.fit x.csv", L"C:\\Test_Copy2", SW_SHOWNORMAL)
Can anyone please provide me with an example on how to do that? I dont know where I'm going wrong, most of the time the command prompt opens but no command is executed!
If you really want to run the jar in a cmd.exe instance, you need to add one of the correct command line switches to cmd.exe for it to work the way you want it to:
/C Carries out the command specified by string and then terminates
/K Carries out the command specified by string but remains
For instance, your command string should be:
C:\\WINDOWS\\system32\\cmd.exe /c java -jar Tool.jar -b x.fit x.csv
You can use the system() function to execute shell commands.
For example:
system("DIR") executes the DIR command in the CMD shell. The default directory at the start is the directory you're .exe file is located.
'system("PAUSE")` executes the PAUSE command.
The command/s you wannt to execute should be passed as a constant string to the function.
Edit:
For you paritcular program the syntax (IMO) would be:
system("java -jar Tool.jar -b x.fit x.csv")
In Applescript, I have the following:
do shell script "/Applications/Vidalia.app/Contents/MacOS/Vidalia"
do shell script "/Applications/Firefox_3.6/Firefox.app/Contents/MacOS/firefox-bin -P Anon"
It works perfectly, but the issue is that it will wait for Vidalia to be CLOSED before it will then launch Firefox. I would like to open both at the same time with one script. I don't really understand the language and all of my searching has turned up nothing. How can I get these open simultaneously? That is the point, after all.
Any help is much appreciated.
Try using the open command to launch the applications:
do shell script "open /Applications/Vidalia.app"
do shell script "open /Applications/Firefox_3.6/Firefox.app --args -P Anon"
With do shell script, AppleScript will wait for the response of the process you're running. As you're calling it, there's no option but to wait for the process to terminate, which is when the application closes.
To solve this, you need to replace your shell commands with ones that provide no response and terminate right away. So try this:
do shell script "/Applications/Vidalia.app/Contents/MacOS/Vidalia &> /dev/null & /Applications/Firefox_3.6/Firefox.app/Contents/MacOS/firefox-bin -P Anon &> /dev/null &"
I didn't test this with the applications you're using, as I have neither installed; instead, I tested with iTunes and Bento, with which it worked as you're hoping.