Can someone please tell me what the command mknod does and what it's syntax is? I can't find it in my "Unix for dummies" book or "Unix in s nutshell". I found it in an existing script that I want to copy, but I want to understand what I am doing. The script is going to do a full export of an Oracle database. I suspect that this command is pre-creating the output file, and making it special in some way, like giving it extra security or something, but I don't really know.
In order to use mknod you need to know the major and minor node numbers for the device you wish to create. The devices.txt file in the kernel source documentation is the canonical source of this information.
To take an example, suppose that version of the MAKEDEV script does not know how to create the /dev/ttyS0 device file. Then you need to use mknod to create it. From looking at the devices.txt file that it should be a character device with major number 4 and minor number 64. So you now know all you need to create the file.
As you can see, many more steps are required to create the file. In this example you can see the process required however
On my AIX server , I have this file "mknod" present in the /etc/ directory. When i try opening it , I dont find
any ascii characters. It shows some encryption/binary format which is not readable. Is it any executable ? what is the
purpose of having this file in etc folder? what if... (2 Replies)
Friends i know mknod with -p option is used to create FIFO special file.:p
But i want to know some circumstance/scenario where these are used.:wall:
Actually i want to know where i can use it in real time.
Please advise.:) (3 Replies)
this is existing issue for this nfs client, which mounts windows exported
file system, and this is only one UNIX box has this problem, other boxes are
Here is from messages file.
Jan 24 03:11:10 venus nfs: NFS mknod failed for
server arc: error 2 (RPC: Can't decode result)
Jan... (0 Replies)
I'm trying to use the "mknod" call in C to create a clone of /dev/null. I am stumped as to the final parameter I should provide to "mknod()". I am supposed to give it a type dev_t, which specifies a major & minor number. I want to specify major 3, minor 1, but how can I do this?
dev_t seems to... (2 Replies)