Performs DOSUNIX text file conversions automatically.
N is the block which should be used as the superblock for the fs. However these are some of the more useful, for the full list check out the man page for `mount`. There are numerous options for the specific filesystes supported by mount. Equivalent to rw,suid,dev,exec,auto,nouser,async. Only permit root to mount the filesystem. This automatically implies noexec, nosuid,nodev unless overridden. Permit/Block the operation of suid, and sgid bits. Permit/Prevent the execution of binaries from the filesystem. You must explicitly mount the filesystem. The filesystem will NOT be automatically mounted at startup, or when mount passed -a. This is really unnecessary as this is the default action of mount -a anyway. The filesystem can be mounted automatically (at bootup, or when mount is passed the -a option). The options common to all filesystems are:Īll I/O to the file system should be done (a)synchronously. (as the example line above is a cdrom there is very little point in doing a fsck on it, so the value is zero).Īs the filesystems in /etc/fstab will eventually be mounted using mount(8) it isn't surprising that the options field simply contains a comma-seperated list of options which will be passed directly to mount when it tries to mount the filesystem. If zero then fsck won't check the filesystem. The sixth field (0) is used by fsck (the filesystem check utility) to determine the order in which filesystems should be checked. If zero then dump will ignore that filesystem. Third field (iso9660) is the type of filesystem on the device from the first field.įourth field (noauto,ro,user) is a (default) list of options which mount should use when mounting the filesystem.įifth field (0) is used by dump (a backup utility) to decide if a filesystem should be backed up. Second field (/mnt/cdrom) specifies the mount point where the filesystem will be mounted. Each field is seperated from the next by whitespace (spaces/tabs).įirst field (/dev/hdc) is the physical device/remote filesystem which is to be described. Other options will be dealt with later.įstab consists of a number of lines (one for each filesystem) seperated into six fields. In this case it means that any user can mount a cdrom, or floppy disk. This is one of the many default parameters you can specify.
Note the user option provided for the cdrom, and the floppy drive. It also has two DOS partitions which are mounted under /mnt. Note that this system has two IDE partitions, one which is used as /, and the other used as /home. dev/fd0 /mnt/floppy ext2 noauto,user 0 0 dev/hdc /mnt/cdrom iso9660 noauto,ro,user 0 0 So, in order to edit the file, you must either log in as root or use the su command to become root. However, note that you must have the root privileges before editing fstab. etc/fstab is just a plain text file, so you can open and edit it with any text editor you're familiar with. So, you can usually fix your mounting problems by editing your fstab file. If you can't access your Windows partition from Linux, aren't able to mount your CD or write to your floppy as a normal user, or have problems with your CD-RW, you probably have a misconfigured /etc/fstab file. etc/fstab contains information of where your partitions and storage devices should be mounted and how. The file is located under /etc, so the full path to this file is /etc/fstab.
Save and close the file.Fstab is a configuration file that contains information of all the partitions and storage devices in your computer. Edit the file /etc/fstab, enter:Īppend the following line: /tmp /var/tmp none rw,noexec,nosuid,nodev,bind 0 0 In the end, your entry should look like as follows: tmpfs /dev/shm tmpfs defaults ,nodev,nosuid,noexec 0 0 Locate the /dev/shm line: tmpfs /dev/shm tmpfs defaults 0 0Īppend the text ,nodev,nosuid,noexec to the list of mount options in column 4. Add nodev, nosuid, and noexec options to /dev/shm In the end, your entry should look like as follows: UUID=0aef28b9-3d11-4ab4-a0d4-d53d7b4d3aa4 /tmp ext4 defaults ,nodev,nosuid,noexec 1 2 Locate the /tmp line: UUID=0aef28b9-3d11-4ab4-a0d4-d53d7b4d3aa4 /tmp ext4 defaults 1 2Īppend the text ,nodev,nosuid,noexec to the list of mount options in column 4. Add nodev, nosuid, and noexec options to /tmp
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