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I picked up a used laptop that has Slackware partitioned on the
hard drive. Is there any way to log in to it without the
password? I have a UNIX book but it does not address this problem.
Do I have to re-install? I have no idea who the previous owner was.
--
Mike, shbecke@ibm.net
Try to boot the computer in single user mode (type linux single at the LILO prompt). If this does not work, you should get boot floppies in order to start a minimum LINUX in a RAM disk. Such floppies should be available in a Slackware distribution. Then you could mount the root partition by typing:
mount -t ext2 /dev/hda1 /mntand edit /mnt/etc/passwd in order to suppress the root password.
One of the simplest ways to do this is to obtain a boot and root disk pair from the Slackware distribution. Boot using both and use mount(8) to mount the root file system from your laptop. You can then edit the
mount_dir/etc/passwd (or mount_dir/etc/shadow) file to remove the
password.
For system administrators concerned with this potential security problem, the
only way to prevent it is through the use of BIOS features that prevent access
to the floppy drive without a password. This is not a Linux security
flaw--any UNIX platform that may be booted from a set of floppies or
from a CD-ROM that allows access to the hard drive has the potential
to be ``hacked'' in this
way. Notable exceptions are systems that use encrypted file systems, but those
are rare and often much slower during normal operation.
--
Chad Robinson,
chadr@brt.com
I have Slackware Linux. Wherever I look, I find software that is in
RPMs. Is there no option other than shifting to Red Hat? Any
conversion utilities?
--
Aseem Asthana, asthana@bom4.vsnl.net.in
Try the package
http://www.chez.com/imil/stuff/rpm4everyone.tar.gz; I use it every day
on an old Slackware 3.0 distribution.
--
Pierre Ficheux,
pficheux@com1.fr
Try alien, a package that converts packages from one format to another. Otherwise, compile rpm on your system so you can do the following:
rpm2cpio package.rpm | cpio -list rpm2cpio package.rpm | cpio -make-dirs -extractIt is quite handy. Note, however, that you might find incompatibilities between your system and the Red Hat packages. I always prefer compiling programs from source when I am on Slackware (but I might be overly cautious).
I just installed Red Hat's Linux 5.0. I used the C compiler to compile a simple C program, test.c, using the command:
gcc test.cThe program compiled and produced an executable called a.out. When I try to run a.out by typing:
a.outI get a message that says a.out is not a recognized command. What am I doing wrong?
First confirm that the a.out file has the correct permissions. Use
ls -al a.out to confirm that the executable (x) bit
is set.
If it isn't,
use the chmod +x command to set this flag. If the
permissions are correct,
specify the full path to the file, as the current directory usually
isn't in your default path. Use ./a.out to ensure
you are attempting to execute the correct program. Change your path by
editing the /etc/profile file or the profile file in your home directory.
--
Vince Waldon, vince.waldon@cnpl.enbridge.com
How do I find out how much free space is left on my disk?
--
Kirk, sci@wadi-petro.com
Use the df command. Briefly, running df without arguments will
show the free space (in KB) on all your disks; df
/some_directory will show the space left on the disk that
/some_directory is on. Also
note that df has an undocumented -h option that shows
sizes in GB or MB as appropriate--convenient for today's large
disks. See the man pages for information on other options.
--
Scott Maxwell,
s-max@pacbell.net
The problem is the following. Each time I try to send an e-mail using a program that manages pop3 accounts such as Eudora or Netscape Mail, I receive the following message: ``The recipient user@domain.com is not acceptable to your SMTP server. The message is not sendable until the recipient has been changed.''
This problem appeared after we upgraded from the previous version
of Linux to version 5.0. No problem occurs when receiving e-mail using
these programs or when sending e-mail through Pine--only when
using Eudora or any other similar program. How can we solve this?
--
Ricardo A. Williams L., rick@corotu.stri.si.edu
The problem is in the new security policies of Red Hat 5. Your mail gets refused with a message of ``551 we do not relay''. The solution here is authorizing your client machine to relay mail through the Linux server. Your /etc/sendmail.cf is quite clear about the options:
# file containing IP numbers of machines which can
# use our relay
F{LocalIP} /etc/mail/ip_allow
# file containing names of machines which can
# use our relay
F{LocalNames} /etc/mail/name_allow
# file containing names we relay to
F{RelayTo} /etc/mail/relay_allow
Add lines to the proper file describing either the client's
IP, the client's name or the recipient's name.
I currently have a TCP/IP (via modem) connection between my Linux box at
home and my office workstation (DEC station running Digital UNIX). The
problem is that the DEC machine is not a gateway, so I cannot reach the
rest of the subnet or the rest of the world, for that matter. Is there a
way my Linux box can reach the subnet gateway which is two hops
away? The route command in my current version of Linux (Slackware,
kernel 2.0.0) does not support the -hobcount flag,
which is supported by Digital UNIX and would do the trick.
--
Martin Olivera, martin@pantano.ucsd.edu
If your PPP IP address is one from the subnet your DEC station
is sitting on, you just need to make sure it does ARP proxying for your
Linux machine (in other words, it has to accept packets for your Linux
machine's IP on its local Ethernet). If this is not the case, then it
is more difficult. The options you have are:
As a Spanish speaker, I want to use a keyboard with a complete
set of Latin characters. I succeeded in implementing it for
almost all applications, except Netscape. I installed the XKeysymDB
file in the correct place, and this file works properly
for Sun machines (I tested), but not for PCs with Linux. I tried to
find the answer at Netscape's home page, but I couldn't.
Perhaps I did the
wrong search. Does anyone know how to set Netscape in order to have
a ``compose'' key which produces accents, tildes and all that
sort of thing?
--
Guigue, guigue@nucate.unicamp.br
If I'm not mistaken, the XKeysymDB file works only for a particular
keyboard, so the one that works for your Sun keyboard is unlikely to
work for your Linux machine's keyboard. Jamie Zawinski's
xkeycaps found at
http://www.jwz.org/xkeycaps/ may help; it is a graphical editor for
editing keyboard setups under X.
--
Scott Maxwell,
s-max@pacbell.net
I got interested in Linux through a programme on BBC World. However,
after an afternoon roaming the Internet, I couldn't get an answer to
two questions most laymen probably have on the subject: does Linux
replace Windows on my computer and is the process irreversible; will
I be able to use my Windows-based programmes on Linux?
--
Philippe Humblé, humble@mbox1.ufsc.br
Linux can replace Windows on your computer, or the two can coexist.
If you buy a commercial distribution or a Linux book, it should help
explain how to do this. The process is irreversible only in the sense
that you'll never want to go back.
There are different ways to use your Windows-based software under
Linux. A couple of emulators--Wine and Wabi--enable you to run
some Windows software directly under Linux. (Similarly, DOSEMU lets
you run DOS software under Linux.) Other Windows
software can be run by rebooting the machine into Windows, using the
software, and then rebooting into Linux again as soon as possible.
As time goes on, you'll discover Linux software that can partially or
entirely eliminate your need for Windows--Linux-native word
processors, spreadsheets and such.
--
Scott Maxwell,
s-max@pacbell.net
I am new to Linux and have heard much about the X Window System
when word processing using Applixware Office or Corel's Word Perfect
for Linux. What if I don't want to use X? Are there quality
office applications that will run without X?<\n>
--
John Tam, johta@mailexcite.com
There is not, as far as I know, a non-X integrated office suite, but many of the pieces exist.
For document processing, you can use TeX. Whether you'll like TeX or
not depends on your needs--it is rock-solid and extremely
powerful, but it is not WYSIWYG.
--
Scott Maxwell,
s-max@pacbell.net
Most people associate ``quality office
applications'' with
``graphical user interface'', a ``what you see is what you
get'' environment like
the current flock of office applications shipping for Windows machines. On UNIX
systems, the standard GUI environment is the X Window System, so all of the current office
suites for Linux run on top of X. This makes life much easier for the
programmer--she can concentrate on writing a good word processor and leave
the details of making it ``graphical'' to X. Early versions of X were somewhat tricky to set up and supported only a small subset of
available graphics cards, but the configuration programs have come a long way
as has driver support--a quick read of the X HOWTO should leave you
with nothing to fear from ``getting graphical'' on your Linux
machine.
--
Vince Waldon,
vince.waldon@cnpl.enbridge.com