这是我在教程中看到的命令:
mkswap /swap && chown root. /swap && chmod 0600 /swap && swapon /swap
这是什么.
意思?
答案1
.
在此上下文中,是的弃用形式,:
是新所有者和组之间的分隔符。
从info chown
:
Some older scripts may still use ‘.’ in place of the ‘:’ separator. POSIX 1003.1-2001 (*note Standards conformance::) does not require support for that, but for backward compatibility GNU ‘chown’ supports ‘.’ so long as no ambiguity results. New scripts should avoid the use of ‘.’ because it is not portable, and because it has undesirable results if the entire OWNER‘.’GROUP happens to identify a user whose name contains ‘.’.
因此,在这种情况下,它与 相同chown root: /swap
,这又意味着
OWNER:
If a colon but no group name follows OWNER, that user is made the
owner of the files and the group of the files is changed to OWNER’s
login group.
由于 root 的登录组是root
,因此相当于chown root:root /swap
答案2
这是
sudo chown root:root /swap
因为它会将组设置为与用户名相同。
尝试创建一个文件夹,然后以相同方式将所有权设置为 root,然后完成后,尝试将所有权设置为您的用户名。
sudo chown $USER. folder/
希望这有帮助!