Linux Cainiao getting started FAQ

Q: Currently, many Linux releases have a custom unified graphical logon interface, but I still want to switch back to the previous logon interface of KDE. how can I modify it? A: If you do not like this

Q:Currently, many Linux versions have a custom unified graphical logon interface, but I still want to switch back to the previous logon interface of KDE. how can I modify it?

A:If you do not like the unified graphic logon interfaces provided by these publishers, you can try to see if these releases have tools for adjusting the graphic logon interface (for example, SuSE provides the tool ). If you do not have one, you can manually modify it according to a common method described below.

First, modify the/etc/inittab file. Find the following line:

X: 5: re spawn:/urs/bin/X11/xdm-nodaemon

In Fodera Core 2, it may be like this:

X: 5: respawn:/etc/X11/kdm-nodaemon

Change this line to the following:

X: 5: respawn:/usr/bin/kdm-nodaemon

"/Urs/bin/kdm" should be modified according to the path of the system kdm, save and quit, restart the machine, or run the following command to make the modification take effect: # init 5

Question: How to automatically run an application when KDE is started?

A:The most common method is to use the Autostart function provided by KDE. the procedure is as follows:

1. enable Konqueror;

2. select "Autostart" from the "Go" menu ";

3. right-click and select "New"-"File"-"Link" to create a New application Link;

4. click the "Application" tab in the window that opens, enter the startup command of the Application to be self-moving, and then click OK.

Q:Can I use a keyboard to control mouse movements in the Linux graphic interface?

A:XFree86 allows you to use a keyboard to control the mouse pointer. To use this function, press Ctrl + Shift + NumLook to check whether the mouse can be controlled through the keypad. The procedure is as follows:

1. The four arrow keys on the keypad can control the four directions of moving the mouse and cursor;

2. "+" on the keypad indicates double-clicking;

3. "5" on the keypad indicates clicking;

4. "0" on the keypad indicates that the selection button is not placed;

5. "." on the keypad indicates that the button is opened.

Q:Why is it normal to display Chinese documents with Xpdf in Linux, but garbled characters?

A:This is a common problem. The reason for this problem is that some PDF files are embedded with Chinese fonts, which can be displayed under Xpdf, however, there are still some files with built-in Chinese fonts that need to be displayed on the local machine. some fonts do not exist in Linux due to copyright reasons, so Xpdf cannot be displayed, there is no good solution to this problem.

Q:How to use the dd command in Linux?

A:The dd command can be used to copy the specified input file to the specified output file and convert the format during the copy process. Examples of dd commands:

# Dd if =/dev/had of = had. bak bs = 512 count = 1

The parameters of the dd command are described as follows:

If = file input file name;

Of = file input file name;

Bs = n sets the size of input and output blocks to n bytes;

Count = blocks only copies the input blocks block.

Q:How can I set a single logon for the same account within the same period of time? That is, when an account logs on to the system, the same account cannot log on to the system again without exiting.

A:To control the number of logons for the same account within the same time period, add the following line to the/etc/pam. d/loginwj file:

# Dd if =/dev/had of =

Session required/lib/security/pam-limits.so

Then, add the account to be restricted in the "/etc/security/limits. conf" file, for example, "edward hard maxlogins1". This means that the edward account can only perform one logon at most.

Q:Why does Ctrl + Alt + Delete Fail?

A:Compile the/etc/inittab file and comment out the line "ca: ctrlaltedl:/sbin/shutdown-t3-r now.

Q:How can I make a CD into an image file?

Answer:: Use the following command to make the disc an image file:

# Cp/mnt/cdrom mirror. iso

You can also run the following command:

# Dd if =/dev/cdrom of =/mirror. iso

Q:How to make several commands run in a single line of command lines?

A:Separated by ";" or. For example, you can use the following command to compile the kernel:

# Make dep; make modules-install

It can also be used as follows:

# Make bzImage & make install

Q:How can I use the crontab command to shut down a database at a specified time every day?

A:Create a file named caoproject (set by yourself ):

# Crontab-e

The file content is as follows:

05 06 *** halt-p

After editing with vi, save the disk and exit. use the crontab command to add it to the task list:

# Crontab caoproject

In this way, the system will automatically shut down the computer at 06:05 every day.