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Slackware-13.1-Hacks-NX Bit

Posted 01-03-2011 at 12:35 AM by arniekat

The NX bit, which stands for No eXecute, is used in processors to separate areas of memory for use by either storage of processor instructions OR for storage of data. The NX Bit is used for security reasons to prevent certain types of malicious software from taking over computers by inserting their code into another program's data storage area and running their own code from within this section (also called a Buffer Overflow Attack).

Intel has the feature called the XD bit, for eXecute...

arniekat

LQ Newbie

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Slackware-13.1-Hacks-Wiping free space

Posted 01-02-2011 at 11:45 PM by arniekat

To eliminate the traces of old removed files, etc, you would want to wipe the empty space. The simple method is to use a standard Linux "dd" utility. In this example, suppose you want to wipe the free space on your hard drive for the /home partition. This will also work for any other partition, such as /tmp. You will only use ONE of the following commands depending on the type of data you want to use to fill up the empty space. The command is/are:

$ su
$ <Root_Password>...

arniekat

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Views 1040 Comments 0 arniekat is offline

Slackware-13.1-Hacks-Emptying trash files

Posted 01-01-2011 at 11:10 PM by arniekat

These instructions are for deleting files that will not go away when you empty the trash using the icon on your desktop.

The trash files are kept in /home/<user_name>/.local/share/Trash/files

$ su
$ <Root_Password>

# cd /home/<user_name>/.local/share/Trash/files
# rm -rf /home/<user_name>/.local/share/Trash/files/files_that_wont_go_away

arniekat

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Slackware-13.1-Hacks-Changing System Time

Posted 01-01-2011 at 10:39 PM by arniekat

This will adjust your system time and correct it using a Stratum 2 Time Server. The quickest way to change your system time is to do the following:

$ su

$ <Root_Password>

# ntpdate pool.ntp.org

You should see confirmation that it worked. The second way of doing this (in case the first way did not work) is to get the IPV4 address or hostname of a Local (meaning in your time zone) Stratum 2 Time Server from the following website:...

arniekat

LQ Newbie

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Slackware-13.1-Hacks-Mount ISO Image

Posted 01-01-2011 at 10:18 PM by arniekat

Suppose you have an ISO Image of a CD/DVD and you want/need to get some information off the disc image. You can mount it as a filesystem and use your file browser to see its contents.

Create a directory to mount the ISO Image:

$ su
$ <Root_Password>
# mkdir -p /mnt/disk

Now mount the *.iso file system to the mount point:

# mount -o loop /<Path_To_ISO_Image>/<Name_of_ISO>.iso /mnt/disk
# cd /mnt/disk...

arniekat

LQ Newbie

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