Red Hat NETSCAPE MANAGEMENT SYSTEM 6.0 - COMMAND-LINE Bedienungsanleitung Seite 53
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are available on your RedHat CD, display the info about the packages, and install them if you
want (installation must be done as root).
Accessing drives/partitions
mount
See here for details on mounting drives. Examples are shown in the next commands.
mount -t auto /dev/fd0 /mnt/floppy
(as root) Mount the floppy. The directory /mnt/floppy must exist, be empty and NOT be your
current directory.
mount -t auto /dev/cdrom /mnt/cdrom
(as root) Mount the CD. You may need to create/modify the /dev/cdrom file depending where
your CDROM is. The directory /mnt/cdrom must exist, be empty and NOT be your current
directory.
mount /mnt/floppy
(as user or root) Mount a floppy as user. The file /etc/fstab must be set up to do this. The
directory /mnt/floppy must not be your current directory.
mount /mnt/cdrom
(as user or root) Mount a CD as user. The file /etc/fstab must be set up to do this. The
directory /mnt/cdrom must not be your current directory.
umount /mnt/floppy
Unmount the floppy. The directory /mnt/floppy must not be your (or anybody else's) current
working directory. Depending on your setup, you might not be able to unmount a drive that you
didn't mount.
7.6 Network administration tools
netconf
(as root) A very good menu-driven setup of your network.
pingmachine_name
Check if you can contact another machine (give the machine's name or IP), press <Ctrl>C when
done (it keeps going).
route -n
Show the kernel routing table.
nslookup host_to_find
Query your default domain name server (DNS) for an Internet name (or IP number) host_to_find.
This way you can check if your DNS works. You can also find out the name of the host of which
you only know the IP number.
traceroute host_to_trace
Have a look how you messages trave to host_to_trace (which is either a host name or IP
number).
ipfwadm -F -p m
(for RH5.2, seen next command for RH6.0) Set up the firewall IP forwarding policy to
masquerading. (Not very secure but simple.) Purpose: all computers from your home network
will appear to the outside world as one very busy machine and, for example, you will be allowed
to browse the Internet from all computers at once.
echo 1 > /proc/sys/net/ipv4/ip_forward
ipfwadm-wrapper -F -p deny
ipfwadm-wrapper -F -a m -S xxx.xxx.xxx.0/24 -D 0.0.0.0/0
(three commands, RH6.0). Does the same as the previous command. Substitute the "x"s with
digits of your class "C" IP address that you assigned to your home network. See here for more
details. In RH6.1, masquarading seems broken to me--I think I will install Mandrake Linux:).
- [CTRL]+c 3
- Directory Size 4
- 25 to know more about grep 5
- Variables 35
- Built in variables: 35
- Numeric Comparisons 36
- String Comparisons 36
- File Comparisons 36
- If Statements 37
- Case select 38
- See also: 39
- Debugging 39
- Services in Fedora Core 5 56
- Understanding Services 56
- Individual Services 56
- SELinux. For 57
- SELinux users 57
- IMAP or 59
- On Demand Services 60
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