10 Linux Tips and Tricks
Here you will find a collection of usefull tips and tricks for Linux-based Operating Systems.
1. How to remove a file with a dash as first character?
If you accidentally created a file with a "-" in the beginning then you want to remove it, you have to do :
# rm ./-filename
or
# rm -- -filename
2. How to set-up nice welcome messages?
It's not actually a tip, it's just a nice thing that will make every login more cooler.
Go to http://www.fi
Print This Post
How To Recover the root Password in FreeBSD
The password cannot be recovered. The following procedure will allow you to change the root password.
Do the following:
- when the following boot message appears
Hit [ENTER] to boot immediately, or any other key for command prompt.
Booting [kernel] in 10 seconds...
hit a key, just pick one EXCEPT the ENTER key. You'll get a prompt like:
disk1s1a:>
- type the following commands:
disk1s1a:>unload all
disk1s1a:>load kernel
disk1s1a:>boot -s
The boot process will now start, just wait until it asks you for a shell. Just hit
ENTER and 'sh' will be used as shell.
If you type 'mount' you will see that only your root partition ( / ) is mounted, you will have to mount 'usr' partition as well.
#mount /dev/ad0s1f /usr
Now you have to mount root partition as read-write enabled. Use the following command:
#mount -u /
The root partition should now be mounted read-write. Now you can use 'passwd' program to
change the root password.
#passwd
That's all, reboot the system and login with the new password.
Print This Post
FreeBSD: How To Upgrade FreeBSD 7 to 8 Stable Release
FreeBSD 7.x allows upgrade of existing installation to FreeBSD 8.0-STABLE. Since this is a major version upgrade, it is recommended that you backup your data, database and configuration files.
This guide will walk a user through updating his source to follow FreeBSD's stable branch. Please make a full backup of the current system before following this guide.
STEP 1: Syncing the source tree
- cvsup installation and configuration
# cd /usr/ports/net/cvsup-without-gui
# make install clean
OR
# pkg_add -r cvsup-without-gui
Copy the sample supfile for Stable to /usr/local/etc/stable-supfile:
# cp /usr/share/examples/cvsup/stable-supfile /usr/local/etc/
Edit file and set host name which specifies the server host which will supply the file updates to your system.
*default host=cvsup1.us.FreeBSD.org
Set release tag to stable 8:
*default release=cvs tag=RELENG_8
Run cvsup to download the latest stable source:
# cvsup -L 2 /usr/local/etc/stable-supfile
When the cvsup has completed, change to the /usr/src directory
Print This Post
FreeBSD: How To boot kernel.old
If you want to boot with an old kernel, because the current one is not working properly, this is what you have to do:
During boot you get a message like:
"Booting kernel in 10 seconds or press enter..."
Just hit any key except the ENTER key and you'll get a prompt.
Type 'unload all' and then 'boot [kernel file]' where [kernel file] is the kernel you want
to boot e.g. 'kernel.old' .
Your FreeBSD machine will boot with the kernel you specified.
Print This Post
Google acquires Aardvark
When you need an answer to a very specific question, sometimes the information just isn't online in one simple place. For example, let's say you want to know if there's snow on Skyline Boulevard on a given day or the best time of year to plant beans in the Bay Area. You might find weather reports and planting guides on many different sites, but for these kinds of questions, a person with the right expertise can be a lot more useful than a webpage.
Print This Post
Subscribe
Calendar
Polls
Loading ...Quote of the day
- Alanis Morissette -
Recent Posts
- Ubuntu: How to install the Classic Desktop in Ubuntu 11.10 (Oneiric Ocelot)
- FreeBSD: How to set up an UPnP Internet Gateway Device (IGD) with MiniUPnP and FreeBSD 9.0
- Ubuntu: How to build and install Linksys AE1000 Wireless-N linux driver on Ubuntu 11.10
- FreeBSD: How to Install and Configure a PPTP VPN server with mpd5 on FreeBSD 8.2
- UNIX Tips: How to find broken symbolic links
Recent Comments
- on FreeBSD: How To Upgrade FreeBSD 7 to 8 Stable Release
- on FreeBSD: How to Install Adobe Flash in FreeBSD 8
- on How To Reset Keyring Password in Ubuntu
- on Ubuntu: How to build and install Linksys AE1000 Wireless-N linux driver on Ubuntu 11.10
- on FreeBSD: How to set up an UPnP Internet Gateway Device (IGD) with MiniUPnP and FreeBSD 9.0
Blogs
Links
Archives
- March 2012 (1)
- February 2012 (1)
- January 2012 (1)
- December 2011 (1)
- November 2011 (4)
- October 2011 (1)
- September 2011 (1)
- August 2011 (1)
- July 2011 (3)
- June 2011 (1)
- May 2011 (1)
- December 2010 (1)
- November 2010 (1)
- October 2010 (4)
- September 2010 (4)
- August 2010 (5)
- July 2010 (3)
- June 2010 (9)
- May 2010 (13)
- April 2010 (23)
- March 2010 (18)
- February 2010 (6)