[root@localhost tmp]# umask
0022
一、chattr用法
1、创建空文件attrtest,然后删除,提示无法删除,因为有隐藏文件
[root@localhost tmp]# cd /tmp
[root@localhost tmp]# touch attrtest
[root@localhost tmp]# chattr +i attrtest
[root@localhost tmp]# rm attrtest
rm: remove regular empty file ‘attrtest’? y
rm: cannot remove ‘attrtest’: Operation not permitted
2、将文件attrtest的隐藏属性取消
[root@localhost tmp]# chattr -i attrtest
[root@localhost tmp]# ls
attrtest hsperfdata_root install ks-script-3CWMoc systemd-private-810f661cb5d247129113c096f86d7db2-cups.service-fEKfSx test2 testtouch vitest yum.log
3、删除attrtest文件,发现可以删除
[root@localhost tmp]# rm attrtest
rm: remove regular empty file ‘attrtest’? y
[root@localhost tmp]# ls
hsperfdata_root install ks-script-3CWMoc systemd-private-810f661cb5d247129113c096f86d7db2-cups.service-fEKfSx test2 testtouch vitest yum.log