does cd command in a shell script load the rvmrc i

问题:

when you have something like..

given inside projectx an .rvmrc file specifying ruby 1.9.2 and having two rubies on my system (ree-1.8.7 and ruby1.9.2)

#!/bin/bash

cd applications/projectx
which ruby
ruby -v

the last two lines output ree-1.8.7 and its path which was not I intended to use.

回答1:

Yes

---

Rvm does define a wrapper around cd that looks like this:

cd () 
{ 
    builtin cd "$@";
    local result=$?;
    __rvm_project_rvmrc;
    __rvm_after_cd;
    return $result
}

It's difficult to tell why your .rvmrc isn't working. Rvm does support project-specific .rvmrc files, but you didn't post yours.

回答2:

You need to source rvm inside your script, when you run a script it doesn't load your .bashrc. Simply add a line like

[[ -s $HOME/.rvm/scripts/rvm ]] && source $HOME/.rvm/scripts/rvm

to the start of your script.

回答3:

If you are using RVM 1.7.0 or later you need to enable project specific .rvmrc files by adding this line to ~/.rvmrc (or system .rvmrc):

rvm_project_rvmrc=1

See: https://rvm.io/workflow/rvmrc/