尝试使用RVM安装任何内容时出现以下错误:
Searching for binary rubies, this might take some time.
Found remote file https://rvm.io/binaries/ubuntu/13.04/x86_64/ruby-2.1.1.tar.bz2
Checking requirements for ubuntu.
Installing requirements for ubuntu.
Updating system..kshitiz password required for 'apt-get --quiet --yes update':
............................
Error running 'requirements_debian_update_system ruby-2.1.1',
showing last 15 lines of /home/kshitiz/.rvm/log/1400047196_ruby-2.1.1/update_system.log
++ /scripts/functions/logging : rvm_pretty_print() 78 > case "${TERM:-dumb}" in
++ /scripts/functions/logging : rvm_pretty_print() 81 > case "$1" in
++ /scripts/functions/logging : rvm_pretty_print() 83 > [[ -t 2 ]]
++ /scripts/functions/logging : rvm_pretty_print() 83 > return 1
++ /scripts/functions/logging …