从python或shell脚本更改工作目录

Question

I like to do something like this in python or bash, where the program transform the given file path and move the current shell.

ulka:~/scc/utils$ python prog.py some_path1
ulka:some_path2$

Here

some_path1 -> prog.py -> some_path2

I tried with subprocess.call or os.chdir, but it's not work, any idea will be appreciated.

Answer 1

Since python runs in its own process, it won't be able to change the current directory of your shell. However, you could do something like this:

change_path() {
    # prog.py figures out the real path that you want and prints
    # it to standard output
    local new_path=$(python prog.py some_path1)  # could use an argument "$1"
    cd "$new_path"
}

Answer 2

It's possible for a shell script to change your shell's current working directory if you run it with source or . . If you run your script like this, a cd command will be all you need. If you're running a shell script without source or . , or if you're running anything that's not a shell script, then there's no nice way to do it, and you'd be forced to resort to nasty hacks like injecting into the process with a debugger (not recommended, but see How do I set the working directory of the parent process? and/or https://unix.stackexchange.com/questions/281994/changing-the-current-working-directory-of-a-certain-process if you really must do this).