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How to remount as read-write a specific mount of device? 0 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
mount - Mounting a squashfs filesystem in read-write - Unix Linux . . . Using overlayfs as shown is the best way to have pseudo "squashfs rw" ; It requires however to run on > 4 x kernel (or ubuntu >14 x trusty ) An alternative solution when one is sitting on older live cd without any overlayfs aufs unionfs is to make use of squashfs'own capabilities
Is a -rw-rw-rw- file really inaccessible inside a drwxrwx--- directory? -rw-rw-rw- Is the file readable writable by everyone or not ? If not, how secure is this access restriction? What if a random user makes a link to my file inside his home directory? Could he access the file then? Or could he access the file by guessing its inode number and using some system calls on inodes?
Shared library mappings in proc pid maps - Unix Linux Stack Exchange The shared libraries are used by multiple applications, as per my knowledge shared library will be loaded into memory once and shared by different processes How multiple processes will be accessed shared library, specific to the "rw-p" section? Multiple processes can perform write in this section
NFS partition mounted as read only - Unix Linux Stack Exchange This looks more like a permissions problem to me than a read-only filesystem From the pi, can you make the export data directory temporarily world-writable? If so, can you now write from the client? When you create a file this way, who is the owner? Without no_root_squash, your root user is mapped to nobody Otherwise, you'll need to map the user from the client to a user on the pi