How to get permission number by string : -rw-r--r--
2012年5月31日 · What do you mean by “set the same”? Do you already have a file with -rw-r--r-- permission and want to set another file with the same permissions? Then see if your chmod supports --reference: “--reference=RFILE use RFILE's …
What's meaning of the `c` in `crw-rw-rw-` in linux file permissions?
I run the command: ll /dev/null and got this output: crw-rw-rw- 1 root root 1, 3 Feb 19 10:20 /dev/null I know d means directory. Can someone please explain what the c special flag means?
Setting ACLs correctly for -rw-r--r--+ - Unix & Linux Stack Exchange
2021年5月29日 · A file created in the directory shows in ls as -rw-r--r--+. Then again, if you just want the named user to get the permissions you say, you can leave the mask field out, and setfacl will set it for you based on the permissions you used for the actual ACL entries:
boot - How can I make grub mount a drive with "rw"? - Unix
2016年3月19日 · That's all from the top of my head, unless having the filesystem already mounted rw confuses some boot script. – Gilles 'SO- stop being evil' Commented Mar 20, 2016 at 13:55
How to properly erase and use a CD-RW - Unix & Linux Stack …
2019年11月6日 · Your CD-RW drive is probably /dev/sr0, but it will also have a /dev/sg* device associated with it. This is the "generic SCSI device" that allows sending more specialized commands to the drive. This is the "generic SCSI device" that allows sending more specialized commands to the drive.
How to remount as read-write a specific mount of device?
mount -o rw,remount /foo will remount /foo mount point rw. If there is a /foo/bar mount point (whether ro or rw), the mount command will likely fail. If there are /foo/what and /foo/ever directories, those will be rw as well. If your read-only mount point is /foo /bar /baz then . mount -o rw,remount /foo will keep other mount points read only.
Cannot access a directory with permissions drw-rw-r--
2014年12月16日 · Directories have two ways of operation. The first is to read or browse a directory, also known as running the ls command, and the other is executing a directory.
Why use `chmod 644` instead of `chmod u=rw,go=r,...`?
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
光盘cd+r，-r,+rw,-rw，有什么区别？刻录过文件的光盘能格式化 …
rw：可重写。您可以写入这些光盘，擦除它们，然后再次写入它们。根据先锋的说法，dvd-rw光盘可能需要写入约1,000次才能更换。rw光盘通常用于以易失性格式存储数据，例如在创建备份或文件集合时。它们还用于家用dvd录像机。 dvd-r和dvd + r的区别和比较
How to use OverlayFS to protect the root filesystem?
It seems the expected approach is to take care of this in an initramfs (that's basically what the overlayrootfs apt package does). I'm not using an initramfs, and don't want to start. For the moment I'm taking the old approach, using a separate root (aka /), /var, and /opt directories with limiting rw myself. –