[Ubuntu]명령어 우선순위 변경

Ubuntu 명령어 우선순위 변경 (Python3)

python

-bash: /usr/bin/python: No such file or directory

Alternatives

1. Python3 위치 파악

    which python3
       
    /usr/bin/python3
   

2. python의 alternatives 파악

    sudo update-alternatives --config python
   
    update-alternatives: error: no alternatives for python
   

3. 명령어 우선순위 등록

    # update-alternatives --install [SYMBOLIC_PATH] [ALTER_NAME] [REAL_PATH] [NUMBER]
    sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 1
    sudo update-alternatives --install /usr/bin/python python /usr/bin/python2.7 2 # if python2 exists
   

4. 명령어 확인

    sudo update-alternatives --config python
   

Alternatives 제거

# sudo update-alternatives --remove [ALTER_NAME] [REAL_PATH]
sudo update-alternatives --remove python /usr/bin/python3