Ubuntu RVM Rails bash command not found

匿名 (未验证) 提交于 2019-12-03 02:50:02

问题:

I just installed ubuntu, and after that I wanted to install RVM with ruby and rails 3.1.

Installations went fine but when I want to create a rails app it can't find the rails command.

I know I can create an alias, but when rvm changes its gemset, the alias-path would be wrong right?

This is my .bashrc file (/home/user/.bashrc):

# ~/.bashrc: executed by bash(1) for non-login shells. # see /usr/share/doc/bash/examples/startup-files (in the package bash-doc) # for examples  # If not running interactively, don't do anything [ -z "$PS1" ] && return  # don't put duplicate lines in the history. See bash(1) for more options # ... or force ignoredups and ignorespace HISTCONTROL=ignoredups:ignorespace  # append to the history file, don't overwrite it shopt -s histappend  # for setting history length see HISTSIZE and HISTFILESIZE in bash(1) HISTSIZE=1000 HISTFILESIZE=2000  # check the window size after each command and, if necessary, # update the values of LINES and COLUMNS. shopt -s checkwinsize  # make less more friendly for non-text input files, see lesspipe(1) [ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"  # set variable identifying the chroot you work in (used in the prompt below) if [ -z "$debian_chroot" ] && [ -r /etc/debian_chroot ]; then     debian_chroot=$(cat /etc/debian_chroot) fi  # set a fancy prompt (non-color, unless we know we "want" color) case "$TERM" in     xterm-color) color_prompt=yes;; esac   [[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"   # uncomment for a colored prompt, if the terminal has the capability; turned # off by default to not distract the user: the focus in a terminal window # should be on the output of commands, not on the prompt #force_color_prompt=yes  if [ -n "$force_color_prompt" ]; then     if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then     # We have color support; assume it's compliant with Ecma-48     # (ISO/IEC-6429). (Lack of such support is extremely rare, and such     # a case would tend to support setf rather than setaf.)     color_prompt=yes     else     color_prompt=     fi fi  if [ "$color_prompt" = yes ]; then     PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ ' else     PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ ' fi unset color_prompt force_color_prompt  # If this is an xterm set the title to user@host:dir case "$TERM" in xterm*|rxvt*)     PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\u@\h: \w\a\]$PS1"     ;; *)     ;; esac  # enable color support of ls and also add handy aliases if [ -x /usr/bin/dircolors ]; then     test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"     alias ls='ls --color=auto'     #alias dir='dir --color=auto'     #alias vdir='vdir --color=auto'      alias grep='grep --color=auto'     alias fgrep='fgrep --color=auto'     alias egrep='egrep --color=auto' fi  # some more ls aliases alias ll='ls -alF' alias la='ls -A' alias l='ls -CF'  # Add an "alert" alias for long running commands.  Use like so: #   sleep 10; alert alias alert='notify-send --urgency=low -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"'  # Alias definitions. # You may want to put all your additions into a separate file like # ~/.bash_aliases, instead of adding them here directly. # See /usr/share/doc/bash-doc/examples in the bash-doc package.  if [ -f ~/.bash_aliases ]; then     . ~/.bash_aliases fi  # enable programmable completion features (you don't need to enable # this, if it's already enabled in /etc/bash.bashrc and /etc/profile # sources /etc/bash.bashrc). if [ -f /etc/bash_completion ] && ! shopt -oq posix; then     . /etc/bash_completion fi

So, I don't really know how to get this to work...

Help is appreciated!

Thanks

回答1:

You need to

Add rvm to your .bashrc by adding a line like

[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session *as a function*

This will allow you to load rvm when you start a new bash session

create a new Gemset when you want a new rails.

The work flow should work like this

$ mkdir new_rails_app $ cd new_rails_app $ vim .rvmrc  # edit the .rvmrc to use the correct Gemset Something like  rvm use ruby-1.9.2-p180@new_rails_app --create  #save and exit vim  $ rvm rvmrc load # you should see a prompt that your Gemset was loaded  $ gem install rails $ rails new .

You now have a working rails directory for a new app using rvm. There are other little tricks like auto loading your rvmrc's but I left that out just for the sake of the "easiest" route.



回答2:

I meet the issue "command not found: rails" too, but I'm using oh-my-zsh for the shell prompt, and I fix the issue by copy the line

PATH=$PATH:$HOME/.rvm/bin # Add RVM to PATH for scripting [[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm" # This loads RVM into a shell session.

from file ~/.bashrc to ~/.zshrc, and it works well. Hope it can give you some help.



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