how can I add a command in terminal to open a file

Question

I save a file Logisim2.7.1.jar in my directory at /home/danny/Application. Whenever I want to run this file in terminal, i have to type these following line in terminal:

 cd /home/danny/Application
 java -jar logisim.2.7.1.jar

Then the file will execute.

My question is: instead of typing all that command line in terminal, can I just type logisim in my terminal and the file will execute?

I did this before by doing the following steps which im not sure, if you know, please correct me:

1. Create a folder called "bin" in home directories.
2. Create a text file inside the bin folder, and add this line java -jar logisim.2.7.1.jar then save it as logisim.txt
3. I then edit the .bashrc file by adding this line at the bottom:
   PATH=$PATH: home/familypc/bin/
4. After that I did something with chmod in my command line which i forgot to make terminal to look in the new bin directories. any helps?

Answer 1

You could simply create and alias by adding the following line to your .bashrc:

alias logisim='java -jar /home/danny/Applications/logisim.2.7.1.jar'

...then reload .bashrc with

source ~/.bashrc

Answer 2

What you want to do is probably this:

1. mkdir ~/.local/bin

   This will create the directory .local/bin inside your home, which is sightly better than just bin (although bin is OK, too).

2. Add to your .bashrc the line PATH="$PATH:$HOME/.local/bin"

   Don't forget the quotes: they may save you a lot of headaches.

3. Create the file ~/.local/bin/logisim and write something like this:

    #!/bin/sh
    java -jar $HOME/full/path/to/logisim.2.7.1.jar
   

   Note: the file is called logisim, without the .txt extension. Also note that you need to specify the full path to the jar file.

4. chmod +x ~/.local/bin/logisim

Now you can restart your shell and enjoy.