vi /etc/profile 修改环境变量,添加红色部分:
for i in /etc/profile.d/*.sh /etc/profile.d/sh.local ; do if [ -r "$i" ]; then if [ "${-#*i}" != "$-" ]; then . "$i" else . "$i" >/dev/null fi fi done export RUBY_BIN=/usr/local/ruby-2.4.2/bin export PATH=$PATH:$RUBY_BIN
source /etc/profile 重新生效环境变量
原文:https://www.cnblogs.com/zhuwenjoyce/p/10653160.html