解决:root切换普通用户su: failed to execute /bin/bash: 资源暂时不可用
前言：从root用户切换到某个普通用户突然报错“su: failed to execute /bin/bash: 资源暂时不可用”或者“su: failed to execute /bin/bash: Resource temporarily unavailable”报错,有时候切换也可能报错“bash: fork: retry: No child processes,本文介绍处理方法。