location of a text file

hadyy · 12-15-2007, 04:35 AM

hi there
I could not find this file in this address:
/usr/src/linux/Documentation/ramdisk.txt
/usr/src/linux is empty folder in my OS(FC7 or FC8)!
guide me to find it.
tanx

reddazz · 12-15-2007, 04:42 AM

You can search for files by doing

Code:

locate ramdisk.txt

or

Code:

#find / -name ramdisk.txt

The file is probably in a place like /usr/src/kernels.

hadyy · 12-15-2007, 05:09 AM

hello
thank you for answer.

[root@localhost~]#locate ramdisk.txt
locate: can not open open '/var/lib/mlocate/mlocate.db' :No such file or directory.
? ? ?

pixellany · 12-15-2007, 05:16 AM

Yoy may need to run updatedb before running locate.

hadyy · 12-15-2007, 05:28 AM

hello again
I run that command(updatedb)
then I run locate ramdisk.txt
OS replied me no answer!

pixellany · 12-15-2007, 05:36 AM

Did you try find?

Maybe "ramdisk.txt" is not on your machine......Do you have reason to think it should be? My system (PCLOS 2007) has no such file.

hadyy · 12-15-2007, 05:43 AM

Yes I try find.
There is no file with this name in my machine.
but if you can upload it or give me an address of it in the web please take it here.
tanx

pixellany · 12-15-2007, 06:42 AM

Quote:

Originally Posted by hadyy

Yes I try find.
There is no file with this name in my machine.
but if you can upload it or give me an address of it in the web please take it here.
tanx

I don't know what you are looking for. A file named "ramdisk.txt" could be just about anything. You will need to tell us more about what you are trying to do.

I did a Google search and there are lots of hits using "ramdisk.txt", so at least we know such a thing exists.

unSpawn · 12-15-2007, 06:53 AM

Quote:

Originally Posted by hadyy

/usr/src/linux is empty folder in my OS(FC7 or FC8)!

Don't you need to install a kernel source package first?

hadyy · 12-15-2007, 07:01 AM

OK
I want to know what are the contains of /usr/src/linux/Documentation/ramdisk.txt

PTrenholme · 12-15-2007, 07:08 AM

1) Are you sure you want "ramdisk.txt?" The only "ramdisk" to which I could find a reference was the Windows command for creating a RAM pseudo-disk.

If you are trying to create and use a RAM filesystem, look at (for example) ramfuse or just do a mount ramfs /mnt/ramfs -t ramfs to create one. (See man mount for details. Note that there are no options available for ramfs, so only root can use it.)

Here's a simple ramfs session:

Code:

$ sudo mount -t ramfs /dev/ramdisk /mnt/ramfs
$ ls /mnt/ramfs
$ cp FF_Profiles.xml /mnt/ramfs
cp: cannot create regular file `/mnt/ramfs/FF_Profiles.xml': Permission denied
$ sudo cp FF_Profiles.xml /mnt/ramfs
$ ls /mnt/ramfs
FF_Profiles.xml
$ sudo umount /mnt/ramfs

2) As for the "/usr/src/linux" being empty, perhaps you need to install the source code before you can use it.

hadyy · 12-15-2007, 08:10 AM

tanx
now I want to know "what is the difference of ramfs and /dev/tmpfs and ramdisk(/dev/ram*)"?

PTrenholme · 12-15-2007, 09:02 AM

Well, it you're using Fedora 8, them there is no /dev/tmpfs and /dev/ramdisk is just a symlink to /dev/ram0. So the short answer is "There's no difference between /dev/ram0 and /dev/ramdisk, and /dev/tmpfs is whatever you've defined it to be, either in udev or by hand."

Perhaps you'd get more meaningful answers if you completely described the problem you're trying to solve.

hadyy · 12-19-2007, 01:34 PM

thank you very much.