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Ebram Shehata
Asked: 2015-09-01 00:06:20 +0800 CST

How to make one shortcut to compile and execute cpp file

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I'm using Ubunru 15.04

GCC : 4.9.2

I usually use this command to compile my cpp files :

g++ /path/file.cpp -o /path/output

and it's cool ! so I made this into a shortcut with 

.desktop

file format and make it executable and it works just fine !!

now I need to make a single shortcut to compile the cpp file and run the output

I simply tried :

g++ file.cpp -o output && /output

but this didn't work and giving Permission Denied when I try to run the .desktop file in terminal

ebram96@ebram96-jj:~$ '/path/shortcut.desktop' 
/path/shortcut.desktop: line 1: [Desktop: command not found
/path/shortcut.desktop: line 2: run: command not found
/path/shortcut.desktop: line 3: /path/file.cpp: Permission denied

here is my .desktop file :

[Desktop Entry]
Name=compile&run
Exec=g++ /path/code.cpp -o /path/output && /path/output
Terminal=true
Type=Application

I simply tried :

g++ file.cpp -o output && ./output

I tried editing /etc/sudoers file adding these lines it also didn't work :

my_username ALL = NOPASSWD: /path/shortcut.desktop

my_username ALL = NOPASSWD: /path/

my_username ALL = NOPASSWD: /same_shortcut_path/output
sudo

3 Answers

  1. Try adding the following to your ~/.bashrc file:

    cr(){
    if [ "$#" -ne 1 ]; then
        echo "Usage: cr <file.cpp>"
    else
        name=$(echo $1 | cut -f 1 -d '.')
        g++ $1 -o name; ./name
    fi
}

    This creates an alias that can be executed from the terminal.

    The function name / command i.e. cr can be replaced if you wish.

    To execute run: cr file.cpp

    • 1

  2. You can't start a desktop file in this way. Move your desktop file into ~/.local/share/applications and use gtk-launch or start it via Unity/GNOME Shell ...

    gtk-launch shortcut     # without any path or extension

    In your case, an alias would be the better solution

    Open your .profile in an editor

    nano ~/.profile

    add a line like this

    alias compile="g++ /path/to/your/foo.cpp -o /path/to/your/output && /path/to/your/output"

    logout and re-login or use

    source ~/.profile

    Use the command (alias) with a simple

    compile
    • 0

  3. Create a bash function (to add in your .bashrc or .zshrc):

    function run-c++ {
  if ! type "g++" > /dev/null; then
    sudo apt-get install g++
  fi
  g++ $1 -o /tmp/main.out && chmod +x /tmp/main.out && /tmp/main.out
}

    Then you can run run-c++ ./whatever-path/to/program.cpp.

    • 0