Appendix A. SUSE LINUX FAQ / A.4. System Configuration and Administration | ||||
|---|---|---|---|---|
 | A.3. Installation | A.5. Applications |  | |
Appendix A. SUSE LINUX FAQ / A.4. System Configuration and Administration | ||||
|---|---|---|---|---|
| A.3. Installation | A.5. Applications | | |
In Linux, there have been no serious viruses found. Also, viruses cannot
cause any serious damage if they are not activated by root. The only virus scanners available in
Linux search e-mails for Windows viruses (if Linux is used as a router or
server). Nevertheless, you should back up important data and
configurations.
.exe files. Where are all
the applications?
In Linux, executable files normally do not have file
extensions. Most programs are located in /usr/bin
and /usr/X11R6/bin.
The command ls -l returns all
executable files in the directory /usr/bin in green.
Also recognize them by the x in the first column.
-rwxr-xr-x 1 root root 64412 Jul 23 15:23 /usr/bin/ftp
To start certain services at boot, use the YaST module . Find a detailed description of this module and some background information about the boot and runlevel concept of Linux in the Administration Guide.
To configure GNOME to start any application automatically when it starts, open the GNOME Control Center and choose +. Open the tab named and enter the application you want started.
In KDE, start Konqueror and open the folder
.kde/Autostart in your home directory. Drag the
application icon from the main menu into the Konqueror window and choose
. The application will be started the next
time you log in to KDE.
Before trying to compile an application on your own check whether it already exist as installable RPM. Try Web sites like http://packman.links2linux.org/ or http://rpmfind.net.
Decompress the archive with tar xvzf
name.tar.gz, read the INSTALL
or README files, and follow the instructions. If
compiling on your own, note that neither the compilation nor the
resulting application are covered by the installation support.
No, it is usually unnecessary and strongly discouraged for inexperienced users to recompile the kernel. Do so only at your own risk. In cases of custom compiled kernels, SUSE cannot provide any installation support.
Linux file systems prevent fragmentation. However, make sure
that you do not use more than 80% of each partition. The fuller
your hard disk, the more “fragmentation” you get, even under
Linux. Use df -h to view information
about used and available hard disk space.
To make more space available, integrate a new hard disk or
parts of it (partitions) into your Linux system at any time. For example,
if it turns out that you need more space in /opt,
mount an additional hard disk partition to this directory. To do so,
follow this procedure:
Install your hard disk following the instructions of the manufacturer then start Linux.
Log in as the root user.
Partition the new hard disk with fdisk. For further information, refer to the manual page of fdisk with man fdisk.
Format the partition with mke2fs
/dev/hdb1.
Enter the following commands:
cd /opt mkdir /opt2 mount /dev/hdb1 /opt2 cp -axv . /opt2
Check thoroughly to see whether all the data has been copied. Afterwards, move the old directory and add a new one—an empty mount point:
mv /opt /opt.old mkdir /opt
Use an editor to add the new partitions in
/etc/fstab. This could resemble the line in Example A.1, “Sample Line in /etc/fstab for an Additional Partition”.
Now, shut down the computer and reboot.
After rebooting, check that /dev/hdb1 has actually
been mounted to /opt using the command
mount. If everything is working as desired, remove the
old data from /opt.old:
cd / rm -fr opt.old
Use the df -hT command.
-h converts the byte sizes into human readable format
(such as 1K, 234M, or 2G) and -T prints the type
of file system.
