我试图安装Ruby Version Manager(RVM)但没有成功.如何解决我得到的这个错误？
ubuntu@ip-172-31-0-20:/tmp$ rvm install ruby-1.9.3-p484
Searching for binary rubies, this might take some time.
No binary rubies available for: ubuntu/14.04/x86_64/ruby-1.9.3-p484.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.
Checking requirements for ubuntu.
Requirements installation successful.
Installing Ruby from source to: /usr/local/rvm/rubies/ruby-1.9.3-p484, this may take a while depending on your cpu(s)...
ruby-1.9.3-p484 - #downloading ruby-1.9.3-p484, this may take a while depending on your connection...
Warning: Failed to create the file ruby-1.9.3-p484.tar.bz2.part: Permission …我正在尝试从历史命令中获取命令。
ubuntu@ip-172-31-13-192:~/redacted$ history
1 ls
2 sudo apt-get install git -y
3 git clone https://redacted@bitbucket.org/redacted/redacted.git
4 ls
5 cd redacted
ubuntu@ip-172-31-13-192:~/redacted$ history | cut -d ' ' -f 2
无输出。怎么了？