People which started to use Linux in the `90 probably miss nowdays Lilo. Grub is now installed by default on every linux distro. However Grub is not that bad at all its only hard to get use to it in the begining.

I came accross one problem, trying to test vanila kernel which i compiled, however i did not know how to make grub to boot my kernel only once for a test (good old lilo -R new-kernel) command.

I started to search on google and i have found this:

booting-only-once
This seems to be quite old method because you would run into this problem:

root@boss [~]# grub-set-default 1
-bash: grub-set-default: command not found
root@boss [~]#
As you can see there is NO such command grub-set-default. I tought, okey maybe there are some additional rpm packages for grub which will replace this missing command, but i was not able to find ANYTHING!

After looking for grub`s tutorial i have came accross one nice command:

savedefault –default=X –once

This is the right command which replaces lilo -R or grub-set-default!

Now here is working example:

my /etc/grub.conf:

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00
# initrd /initrd-version.img
#boot=/dev/hdc
default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu

title Fedora Core (VZ)
root (hd0,0)
kernel /vmlinuz-2.6.18-8.1.4.el5.028stab035.1 ro root=/dev/VolGroup00/LogVol00 rhgb
initrd /initrd-2.6.18-8.1.4.el5.028stab035.1.img

title Fedora Core (2.6.17-1.2187_FC5)
root (hd0,0)
kernel /vmlinuz-2.6.17-1.2187_FC5 ro root=/dev/VolGroup00/LogVol00 rhgb
initrd /initrd-2.6.17-1.2187_FC5.img

As you can see by my config file, the "VZ" kernel is default and it will be booted first.

The second kernel is "2.6.17-1.2187_FC5" - which is old FC5 kernel.

For test i want to boot "2.6.17-1.2187_FC5" old kernel first instead default "VZ" kernel.

To do that at shell prompt type:

grub

GNU GRUB version 0.97 (640K lower / 3072K upper memory)

[ Minimal BASH-like line editing is supported. For the first word, TAB
lists possible command completions. Anywhere else TAB lists the possible
completions of a device/filename.]
grub>

Now type this: savedefault –default=1 –once

grub> savedefault –default=1 –once

Next line type: reboot

grub> reboot

and you are back into shell prompt.

Now reboot your system and thats it !

Simple! I did not come accross any tutorial which will explain in plain english how to boot kernel once !

how can I install mod_perl on apache 2.2 with fedora?

fedora claims that mod_perl is on the system in "add/remove software" but i cant find it

rpm -qa|grep perl
thx
mod_perl
mod_perl is listed…but …im not sure how to put it in httpd.conf
cuz i cant find any relevant files outside of documentation

rpm -q –filesbypkg mod_perl
thx
THAT one says "package mod_perl is not installed"
mod_perl requires apache files to compile
god damn it
huh ?

you said the other one showed it ?
it did
ok
woops lol wrong vnc
hahahahaha
use shell not vnc!

I have a question about using yum
Well.. a particular package is at 2.6 in the Yum repositories but it crashes all the time and this is a known issue.

In G entoo you can install older versions by specifiying the version number.
Can you install previous versions of an app using Yum?
Any ideas Jy?

I don't think you can with yum
using older versions is stupid

and yes you can do it using rpms

not advisable though

And im with JY on this one too
PsychOmeg: I use FC5 as my desktop at work. Evolution 2.6 crashes left and right… everytime I open it. It's apparently a known issue with 2.6.
I've read 2.2 is quite stable.
well what does the developers site say ?

Wouldnt it be better to get a fixed version and compile a rpm ?
Haven't gotten that far yet.
thats what id do
I have the source for 2.2. But its now dependency hell time.
yes

Get something newer
check with the developers
Yeah I could.. Smetimes takes so long for a reply.
no i meant check for newer source

well and then debug info
should be in the tar ball
Oh they have 2.4 and 2.6 and 2.7 (unstable) source
then get a spec file modify it to suit needs and compile rpm

done
That's just it. Not sure what makes it crash. Could be the way the RPM was built. Could be the version itself.
strace ftw

debug ftw

error codes ftw

;-p

logs ftw!
Man.. a lot of damn work just to connect to an Exchange server!

does /etc/cron.daily run at midnight?

depends what cron is set to

/etc/crontab
02 4 * * * root run-parts /etc/cron.daily
i suck at cron rofl
let me read

thats 4am ?
0 4 * * * root run-parts /etc/cron.daily
0 0 * * * root run-parts /etc/cron.daily
that be right?

* * * * * command to be executed
- - - - -
| | | | |
| | | | —– day of week (0 - 6) (Sunday=0)
| | | ——- month (1 - 12)
| | ——— day of month (1 - 31)
| ———– hour (0 - 23)
————- min (0 - 59)

ok
Thank you
Thanks for the help man

is there a way to make do like mkdir monthdate and it make a folder with the the month and the day?

GhostMan, yes
How and create a simlink to do the same thing?
using date +%m

mkdir `date +%m`
check man date for other options
what about creating a simlink to the date
just as you would create a normal sym link and then use a subshell i.e. “ to run date

just as i showed you with mkdir
;-}
sweeet
as I said for a full listting of date options
man date

;-]
is there a way to tell what a simlink for a dir is?
So I can see why its not working
ls -al

inside the ir?
yes
see anything wrong with cp -a /folder /folder/blah/`date +%m%d`
cause that didnt work hmm
errrm

folder/ maybe ?
cp -a testdir/ ./testdir`date +%m%d`
testdir/ is current dir
also ./currentdir

/dir/dir/dir is full path
pwd to check

hmm I cant even get a simlink to work
without the date
GhostMan, works here

anyone know any alternate commands for adding users, except 'adduser' and 'useradd' ?

useradd is the command
and it's in /usr/sbin
adduser is a symlink to it
oh

hm
I get "bash: adduser: command not found."
any idea why?
su -
I think its FC5

cause you didn't su right
then try it
the little - is important
or use full path

/usr/sbin/useradd blah
"su: user useradd does not exist"
jebus
hah

su -
su - && useradd blah
oh, cool.. thanks

how can I mount a drive so every user can read it?

chmod the mountpoint
would a dir with the sticky bit set look like: drwxrwxrwt ?
yes

sticky bit just places the t at the end
the other is chmod 777
ah
thanks