linux umask
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拿掉的文件/目录默认权限
umask查看默认权限设置, 为数字形式
参数 -S 查看符号形式通常
- 文件默认权限为666
- 目录默认权限为777
所以umask表示会去掉的权限, 则下图中表示user不被拿掉任何权限, 其他用户被拿掉写权限
r: 4w: 2x: 1
使用就是直接在umask后加一个3位数字表示要拿掉的权限
# exampleumask 003umask 421umask 777
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