安装后没有显示Rubyjsongem-Rubyjsongemnotshowingafterinstall

3  

You installed JSON using sudo but it appears you're running RVM. Under RVM, using sudo to install gems, is a big NO-NO and causes this sort of problem.

您使用sudo安装了JSON,但看起来您正在运行RVM。在RVM下,使用sudo来安装gem,是一个很大的NO-NO并导致这类问题。

sudo gem install json installed it over the pre-existing JSON in your system, not into the RVM-controlled Ruby.

sudo gem install json将它安装在系统中预先存在的JSON上,而不是安装在RVM控制的Ruby中。

Do it again, but do NOT use sudo and see what happens.

再做一次,但不要使用sudo,看看会发生什么。

And, unless you understand what's happening with sudo gem install json or some other gem, don't use sudo gem install or sudo gem remove.

而且,除非你了解sudo gem install json或其他一些gem发生了什么,否则不要使用sudo gem install或sudo gem remove。

EDIT:

Per the Troubleshooting page on RVM's site, here's how to remove the system-wide installation:

根据RVM站点上的“故障排除”页面,以下是如何删除系统范围的安装:

#!/bin/bash
/usr/bin/sudo rm -rf $HOME/.rvm $HOME/.rvmrc /etc/rvmrc /etc/profile.d/rvm.sh /usr/local/rvm /usr/local/bin/rvm
/usr/bin/sudo /usr/sbin/groupdel rvm
/bin/echo "RVM is removed. Please check all .bashrc|.bash_profile|.profile|.zshrc for RVM source lines and delete
or comment out if this was a Per-User installation."

0  

If you need sudo permissions to install a gem you should use: rvmsudo

如果您需要sudo权限来安装gem,您应该使用:rvmsudo

In this case, it fixed my problem without having to reinstall everything.

在这种情况下,它解决了我的问题,而无需重新安装所有内容。