以前は RVM が動作していましたが、Mountain Lion にアップグレードした後は動作しなくなったように見えますか? だから私はそれを再インストールしようとしました：
Ayman$ curl -L https://get.rvm.io | bash -s stable
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 185 100 185 0 0 200 0 --:--:-- --:--:-- --:--:-- 755
100 9979 100 9979 0 0 5911 0 0:00:01 0:00:01 --:--:-- 5911
Downloading RVM from wayneeseguin branch stable
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 125 100 125 0 0 67 0 0:00:01 0:00:01 --:--:-- 102
100 1047k 100 1047k 0 0 159k 0 0:00:06 0:00:06 --:--:-- 245k
Upgrading the RVM installation in /Users/Ayman/.rvm/
RVM PATH line found in /Users/Ayman/.zshrc.
RVM sourcing line found in /Users/Ayman/.zlogin.
Upgrade Notes:
* No new notes to display.
# RVM: Shell scripts enabling management of multiple ruby environments.
# RTFM: https://rvm.io/
# HELP: http://webchat.freenode.net/?channels=rvm (#rvm on irc.freenode.net)
# Cheatsheet: http://cheat.errtheblog.com/s/rvm/
# Screencast: http://screencasts.org/episodes/how-to-use-rvm
# In case of any issues read output of 'rvm requirements' and/or 'rvm notes'
Upgrade of RVM in /Users/Ayman/.rvm/ is complete.
# Ayman ####,
#
# Thank you for using RVM!
# I sincerely hope that RVM helps to make your life easier and more enjoyable!!!
#
# ~Wayne
rvm 1.15.5 (stable) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/]
正しくインストールする必要がありますか？準備は整っているはずですが…
Ayman$ which rvm
Ayman$ rvm requirements
-bash: rvm: command not found
Ayman$ rvm use 1.9.2 --default
-bash: rvm: command not found
さて、何をすべきか？.bash_profile と .bashrc を見て、そこにあるものを確認しました。
Ayman$ ls -la
total 136
drwxr-xr-x+ 26 Ayman staff 884 Aug 23 20:44 .
drwxr-xr-x 6 root admin 204 Aug 8 19:27 ..
-rw------- 1 Ayman staff 3 Jun 16 15:21 .CFUserTextEncoding
-rw-r--r--@ 1 Ayman staff 21508 Aug 23 08:03 .DS_Store
drwx------ 10 Ayman staff 340 Aug 23 07:57 .Trash
-rw------- 1 Ayman staff 9089 Aug 23 20:47 .bash_history
-rw-r--r-- 1 Ayman staff 106 Aug 22 21:17 .bash_profile
-rw-r--r-- 1 Ayman staff 24 Aug 23 20:47 .bashrc
drwxr-xr-x 3 Ayman staff 102 Aug 21 20:41 .bundler
drwxr-xr-x 3 Ayman staff 102 Jun 24 21:45 .gem
-rw-r--r-- 1 root staff 155 Aug 21 22:52 .gemrc
-rw-r--r-- 1 Ayman staff 61 Aug 21 19:40 .gitconfig
-rw-r--r-- 1 Ayman staff 14 Aug 23 08:14 .irb_history
-rw------- 1 Ayman staff 2415 Aug 23 20:44 .mysql_history
drwxr-xr-x 29 Ayman staff 986 Aug 23 20:58 .rvm
-rw-r--r-- 1 Ayman staff 118 Jun 24 21:25 .zlogin
-rw-r--r-- 1 Ayman staff 59 Jun 24 21:25 .zshrc
drwx------+ 18 Ayman staff 612 Aug 23 08:02 Desktop
drwx------+ 5 Ayman staff 170 Jun 24 23:04 Documents
drwx------+ 19 Ayman staff 646 Aug 22 21:05 Downloads
drwx------@ 47 Ayman staff 1598 Aug 9 22:30 Library
drwx------+ 3 Ayman staff 102 Jun 16 15:21 Movies
drwx------+ 5 Ayman staff 170 Jun 24 23:05 Music
drwx------+ 57 Ayman staff 1938 Aug 19 22:40 Pictures
drwxr-xr-x+ 5 Ayman staff 170 Jun 16 15:21 Public
drwxr-xr-x 5 Ayman staff 170 Aug 23 07:57 Sites
これが私のnano .bashprofileです：
PS1="\u$ "
alias ll="ls -lahG"
export PATH="/usr/local/bin:/usr/local/sbin:/usr/local/mysql/bin:$PATH"
これが私のnano .bashrcです（別のstackoverflowの回答の指示ごとに変更しました）：
PATH=$PATH:~/.rvm/bin
次に何を試すべきかについての手がかりはありますか？ありがとう！