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openSuse、linux、chmod 更改链接的权限

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openSuse、linux、chmod 更改链接的权限

我正在尝试更改链接的权限。我希望“其他”实体仅具有读取权限，但是当我运行命令时，权限不会更改。是否有什么我做得不正确，或者有不同的方法来更改链接的权限。

linux-gn77:~ # ls -l /usr/bin/startup.sh
lrwxrwxrwx 1 root dev 31 May  3 20:33 /usr/bin/startup.sh -> /usr/lib   /tomcat7/bin/startup.sh
linux-gn77:~ # chmod 770 /usr/bin/startup.sh
linux-gn77:~ # ls -l /usr/bin/startup.sh
lrwxrwxrwx 1 root dev 31 May  3 20:33 /usr/bin/startup.sh -> /usr/lib/tomcat7/bin/startup.sh
linux-gn77:~ # chmod o=r /usr/bin/startup.sh
linux-gn77:~ # ls -l /usr/bin/startup.sh
lrwxrwxrwx 1 root dev 31 May  3 20:33 /usr/bin/startup.sh -> /usr/lib/tomcat7/bin/startup.sh
linux-gn77:~ # chmod o-r /usr/bin/startup.sh
linux-gn77:~ # ls -l /usr/bin/startup.sh
lrwxrwxrwx 1 root dev 31 May  3 20:33 /usr/bin/startup.sh -> /usr/lib/tomcat7/bin/startup.sh

请让我知道如何实现这一目标。谢谢

答案1

您无法更改链接的权限。您将需要更改目标的权限。这记录在man 2 symlink：

   The permissions of a symbolic link are  irrelevant;  the  ownership  is
   ignored  when following the link, but is checked when removal or renam‐
   ing of the link is requested and the link is in a  directory  with  the
   sticky bit (S_ISVTX) set.

所以，为了实现你想要的，你需要运行

 chmod 770 /usr/lib/tomcat7/bin/startup.sh

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