Setting execute permission for everyone changed the mode to 755.
设置每个人的执行权限将模式改为 755。
The permission mode is computed by adding up the following values for the user, the file group, and for everyone else. The diagram shows how.
权限模式是由用户，文件组及其他所有人各组数值分别相加得出的。从上面的图表中应该能看出个大概。
To be more selective, you may prefix the mode expression with u to set the permission for users, g to set it for groups, and o to set it for others.
为了更具可选性，您可以给模式描述加前缀 u 来设置用户权限，g 来设置组权限，还有 o 为其他人设置。
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