执行C ++二进制文件而不以`。/`结尾

Question

Suppose I have a file called A.cpp.

I used argc and argv in main to make it a terminal application, that means I want the program to work like this:

terminal> program [options] [input]

Given I compile it like this:

g++ -std=c++11 -o program A.cpp

When I wrote

program [options] [input]

in windows, it worked just fine, but in ubuntu I have to write

terminal> ./program [options] [input]

is there a way to execute it without this " ./ " ?

grep works in ubuntu just like that and without the " ./ ", and I wanted A.cpp to run just like grep.

Answer 1

Depending on your shell, and possibly its configuration, it may already work.

Assuming you have actually tried, and it does not, then you need to put your program in a directory that is on your $PATH .

$ echo $PATH

to see a colon ( : ) separated list of candidate directories, such as /usr/local/bin , to where you could mv it, or alternatively you could put it anywhere you like, and add that to $PATH :

$ mkdir -p ~/my-progs
$ mv prog ~/my-progs
$ echo 'export PATH="$HOME/my-progs:$PATH"' >> ~/.bashrc
$ source ~/.bashrc

assuming you are using bash (check echo $SHELL ).

Answer 2

I think you have to add your directory of executable to the PATH variable of your shell (this may change between some shells).

export PATH=$PATH:/path/to/dir

If you would like to make it permanent you may need to add this to

~/.profile (or ~/.bashrc depends on your shell)

However, personally I prefer creating a shell script to prepare the development environment and run it whenever I need instead of hardcoding these values somewhere in the filesystem. By this way, you can initialize some other variables which may be usefuful for further development plans.

Answer 3

You can place your executable program in /usr/bin

By example if your program is named myprog you can move it in /usr/bin/myprog, then you can execute it from anywhere by typing

$ myprog

To give it execution permission if needed :

$ sudo chmod +x myprog