http:www.cyberciti.biz/tips/compiling-linux-kernel-26.html After building my first LFS system, I realized the LFS project has great kernel docs See http:www.linuxfromscratch.org/lfs/view/stable/chapter08/kernel.html which really points to this great doc http:www.linuxfromscratch.org/hints/downloads/files/kernel-configuration.txt Note unless in a chroot like in LFS, just use make menuconfig instead of all the LANG stuff apt-get install build-essential libncurses5-dev Download and extract kernel...

Ten usefull commands for FIND http:www.go2linux.org/usages-examples-of-find-command find ./ -name "*.mp3" this is casesensative find ./ -iname "*.mp3" this one is case-insensative find / -type d -print (to list only directories) find / -type l -print (to list only soft links) find / -type b -print (to list only bliock special files) find / -type f -print (to list only regular files)' find ./ -not -iname *.mp3 -not -iname *.jpg -not -iname *.jpeg like to find all junk thats not music or music re...

See When you get say, Windows XP setup in your VirtualBox virtual machine, you can easily forward ports from the Host OS, to the Guest OS. An example, I want to use the windows Remote Desktop to remote into my virtual XP installation. I open port 3389 on my router to point to my ubuntu desktop, then I forward that port into my guest OS. List vms: VBoxManage list vms List Extra Data (port forwards): VBoxManage getextradata xpserver enumerate To forward to a machine http:ubuntuforums.org/showthre...

Would really like to learn more about embedded linux. Found an incredible website about Bootdisks and the boot process at http:www.tldp.org/HOWTO/Bootdisk-HOWTO which will be a good start. Later I will tackle Linux from Stratch at http:www.linuxfromscratch.org/lfs/view/stable/chapter01/how.html Also found some nice articles on a Tiny Busybox system written by the creator of BusyBox himself! Part 1 http:www.linuxjournal.com/article/4335 Part 2 http:www.linuxjournal.com/article/4395 BIOS calles s...

Very nice, KVM on ubuntu instructions https:help.ubuntu.com/community/KVM Remember, theres also VirtualBox which I do have running, and there is vmware which I also have running. First attempt to virt vista Installing Windows Vista Ultimate on a KVM Virtual Machine running on Ubuntu Hardy Heron 8.04 Check if CPU can virtualize (can it returns any results) egrep '(vmx|svm)' --color=always /proc/cpuinfo Check if you have a 64 CPU (is if it returns any results) grep ' lm ' /proc/cpuinfo Check if y...

@echo off FOR /F "TOKENS=1DELIMS= " %%A IN ('DATE/T') DO SET CDATE=%%B FOR /F "TOKENS=1,2 eol=/ DELIMS=/ " %%A IN ('DATE/T') DO SET mm=%%B FOR /F "TOKENS=1,2 DELIMS=/ eol=/" %%A IN ('echo %CDATE%') DO SET dd=%%B FOR /F "TOKENS=2,3 DELIMS=/ " %%A IN ('echo %CDATE%') DO SET yyyy=%%B FOR /F "TOKENS=1-5 DELIMS=:" %%d in ("%time%") DO SET h=%%d FOR /F "TOKENS=1-5 DELIMS=:" %%d in ("%time%") DO SET m=%%e FOR /F "TOKENS=1-5 DELIMS=:" %%d in ("%time%") DO SET s=%%f SET dateFilename=%yyyy%-%mm%-%dd%_%h%...

> Errors > Helo command rejected: need fully-qualified hostname > Host name xxx.com doesn't match IP address xxx.xxx.xxx.xxx See http:en.wikipedia.org/wiki/List_of_DNS_record_types Im not sure, but I believe along with correcting the reverse dns lookup (see below) you also need to set a fully qualified domain name (FQDN) for EasyMail SMTP Express. Usually, EasyMail will use the name of the server as the FQDN. An example, my server is dyna-web, so the error message is : Helo command rejected: ne...

FYI, new install of FreeBSD 9.0-BETA3 with docs, src, ports,, (basic standard full install) ended up using 2.5g HD space. The new installer defaults entire drive to / slice, in fact the entire installer is quite different that previous versions, much easier it seems. portsnap fetch portsnap extract portsnap upgrade (after that just 'portsnap fetch update' to get latest ports) whereis portupgrade cd /usr/ports make quicksearch name=portupgrade cd /usr/ports/ports-mgmt/portupgrade; mak...

Always leave the 3 primary partitions as large ones, to use for OS's that must be installed on primary Remeber, max 15 partitions (or is it 14, sda14?) If you have multiple drives, use only 1 swap to save partition numbers Pick 1 super small fast distro as your main distro which uses /boot. (or not? just grib-install to boot part?) Very Important (see Differences in partition formatting below) Format all drives and partition with the same OS, newer e2fs formatters are incompatible, grub won't b...

How to password protect a apache alias Alias /seagate750/ "/mnt/seagate750/" AllowOverride All Options Indexes MultiViews Allow from all Note, must goto http:server/seagate750/ (Must have that last /) make /mnt/seagate750/.htaccess AuthType Basic AuthName "Password" AuthUserFile /mnt/seagate750/.htpasswd require valid-user make /mnt/seagate750/.htpasswd mreschke:blahblahblah replace that with the correct password, you can find a apache password generator online, just enter mreschke as the user M...

Program that copies command output to the clipboard xsel is a linux GNU tool used to copy command line output or file output to your standard clip board for pasting. http:linuxtidbits.wordpress.com/2008/02/22/command-line-to-clipboard/ To copy a text to the middle mouse button clipboard: xsel < /etc/fstab To copy to the context-menu clipboard: xsel --clipboard < /etc/fstab Also Xsel can be piped to: echo “a-bit-of-text” | xsel -c cat /etc/make.conf | xsel -c Paste To output clipboard informa...

Say I have a datagrid with just one column, several rows, with a checkbox in each row. I want to build a save function that saves each checked item to the database. I also want to be able to click anywhere on the datagrid row and have that check/uncheck the box for me, which I will achieve with javascript and html events. First, the datagrid is named grdUserGroups I have one datagrid column, wich a TemplateColumn in it. That template column's item has 2 forms, a check box named chkUserGroup with...

Example, loops all checkboxes on page with certain name and alerts if they are checked Note: masterform is the name of my variable for (var i = 0; i < document.masterform.elements.length; i if (document.masterform.elements.type == 'checkbox') { if (document.masterform.elements.name.substring(0, 12) == 'chk_project_') { if (document.masterform.elements.checked) { alert('You Checked: ' } } } } A bit different than looping forms, this will loop all elements (like divs, spans, links...). function t...

InnoDB provides MySQL with a transaction-safe (ACID compliant) storage engine that has commit, rollback, and crash recovery capabilities. However, it cannot do so if the underlying operating system or hardware does not work as advertised. Many operating systems or disk subsystems may delay or reorder write operations to improve performance. On some operating systems, the very system call that should wait until all unwritten data for a file has been flushed - fsync() - might actually return befo...

For this to work the servers /etc/ssh/sshd_config must have RSAAuthentication yes PubkeyAuthentication yes On the local client, in a terminal, as the user you normally use to ssh with (like your normal username) ssh-keygen -t rsa This generates an RSA key for SSHv2 (v2 is the -t paramater) This creates 2 files in your /home/username/.ssh/ folder id_rsa, which is the private key id_rsa.pub which is the public key Now we have to get that public key file on to the server your are connecting to wit...

Used for mounting a folder over SSH (Secure Shell File System). So I can map drives from a remote linux server. From http:www.linuxinsight.com/sshfs_secure_and_transparent_access_to_remote_filesystems.html apt-get install sshfs or yum install fuse-sshfs Finally, as sshfs is designed to be used by regular users (not under superuser privileges) you should add yourself (and possibly others) to the fuse system group. Something like this should do: usermod -a -G fuse You must logout and login again...

A quick topic describing how to create and manage linux users and groups from the command line. This topic only describes what linux users and groups are and how to manage them. It does not explain security and permissions for those users. Please see for help on that topic. > Remember to use --help (example usermod --help to see a help list for that command Linux is a multi-user operating system. The linux user system uses users and groups to define a users role on the system. A user...

Hard drive partition management in Linux Partition Drives Format Drives I don't have to tell you to be careful, everyone deletes a hard drive at some point, no doubt you have too. Make sure you get the right drive letter (sda or sdb or sdc...). I will substitute with x (sdx) This example will create a swap, a root partition for a linux install, and a large home partition. I am using a new seagate 750g SATAII HD. fdisk -l Note: this does not format the drive, just partitions it. fdisk /dev/sdx m...

While connect to a remote computer using windows remote desktop, the normal CTRLnot effect the remote machine, only your local computer. So these shortcuts give you control on the remote computer. Key combination Function Similar local keys CTRLCTRLALTALTALTCTRLCTRL http:sqlblogcasts.com/blogs/simons/archive/2006/02/06/CTRL-ALT-DEL-in-Terminal-Services.aspx First off, make sure the Remote Desktop Services service is started. In the Remote Desktop settings of my Windows 7 Professional 64bit insta...

FreeNX (http:freenx.berlios.de/) is a Terminal Server for Unix & Linux, similar to windows remote desktop or linux 2xTerminalServer. It is based off the non-free NX (http:www.nomachine.com/index.php). FreeNX client is only for linux, but NX has free clients for windows (http:www.nomachine.com/download.php) http:www.drtek.ca/freenx-server-ubuntu-hardy Note, uses SSH, so uses that port in /etc/ssh/sshd_config also, in sshd_config, if you have the AllowUsers set, then must add nx ex: AllowUsers nx...

apt-get install samba Add the linux user, but disable linux box login useradd -d /home/username -s /bin/false -n username This will create a new user with same group name with (told by '-n'), but the user can't login and run any shell command (because you have specfic the login shell is /bin/false by the '-s' switch, if you want allow user to able to login to a shell, replace /bin/false with /bin/sh). Create a samba user (same as linux username created above) smbpasswd -a username '-a' switch t...

SQL Server 2000 Maintenance > The database administrator works like a doctor, keeping databases healthy. Learn the routine maintenance tasks that can help your databases live a long and active life. SQL Server 2000 eliminates the need to run DBCC CHECKDB or DBCC CHECKALLOC. 99% of database failures and corruption with SQL Server 2000 happen due to hardware failures. It is still a good Idea to run DBCC CHECKDB to ensure the overall health of your database prior to backing it up. DBCC C...

Find most documentation online at http:www.walterzorn.de/en/tooltip/tooltip_e.htm Very awesome javascript tooltips, very advanced. One thing I did find is in IE7 (and maybe others, didn't test), the page loads very slowly with wz_tooltip in there. The fix was found at http:www.webdeveloper.com/forum/showthread.php?t=163644 I edited wz_tooltip tt_Err("There are HTML elements to be converted to tooltips.\nIf you" It defaultly says, true at the end. I am using an html element with all my tooltip d...

You can see a list of all packages installed by dpkg --get-selections, some packages will say "deinstall" next to them, this means that package has been uninstalled, but old data is still ramaining. You can purge these uninstalled packages by dpkg --purge the-nameof-the-package. If you wanted to write a loop to --purge all package with deinstall, do this for i in $(dpkg --get-selections|grep deinstall|awk '{print $1}'); do dpkg -P $i; done To Count installed packages dpkg --get-selections|grep i...

Export a dataset or datatable to excel .csv then stream (prompt for download) the file. This code uses a datatable, if you have a dataset, just convert to datatable like so Dim dt as new DataTable dt = ds.Tables(0) Dim sw As New System.IO.StreamWriter(Server.MapPath("~/data.csv"), false); Dim ds As New DataSet Dim dt As New DataTable ds = Session("trkDsResults") dt = ds.Tables(0) Dim iCol As Int16 = dt.Columns.Count Dim i As Int16 For i = 0 To iCol - 1 sw.Write(dt.Columns(i)) If i < iCol - 1 The...

Export an ASP.NET datagrid to HTML Then you could stream the file to their browser with

Nice how2 on the /etc/network/interfaces http:www.cyberciti.biz/faq/setting-up-an-network-interfaces-file/ Start the GUI network administration/configuration tool by typing redhat-config-network (Red Hat 9 and Enterprise 3.0) or system-config-network (Fedora) at a shell prompt. Make sure your network interface (typically eth0) is highlighted and click the Edit icon. Select the Automatically obtain IP address settings with dhcp radio button. Check the Automatically obtain DNS information from pr...

Not to be confused with linux sendmail. apt-get install sendEmail Create a bash script "sendemail" and run chmod 755 on it. #!/bin/sh export smtpemailfrom=zabbix@yourdomain.com export zabbixemailto=$1 export zabbixsubject=$2 export zabbixbody=$3 export smtpserver=yoursmtpserver.com export smtplogin=smtpuser export smtppass=smtppassword #Use this line if your SMTP server requires authentication /usr/bin/sendEmail -f $smtpemailfrom -t $zabbixemailto -u $zabbixsubject -m $zabbixbody -s $smtpserver:...

When you click a button in ASP.NET, it POSTS to itself and calls the btnXXX_click function. One way to make it go to another .aspx page on click is to call Server.Transfer or Response.Redirect from within that btnXXX_click function, but no form variables will be passed along. I want to goto a btnXXX_Click function when the button is clicked, then do some stuff, then redirect to another page along with the form variables Doing a Server.Transfer or Response.Redirect will NOT transfer the form var...

If you have a column that contains some alpha and some numeric data, SQL sees the entire column as alpha and sorts the data differently. Here is an example of an alpha column order by: 105k 10k 120k 20k Another Field Yet Another Field This is obvious since 5 (in 105k) is less than k (in 10k). This is the logical, correct way to sort alpha-numeric data. But I want the order to be 10k, 20k, 105k... In SQL, the column type is defined by the table you are pulling the data from, so if the table colu...

When displaying a formated date string in an ASP.NET datagrid, you get an error if the dataset field is NULL If closeDate is not NULL, this works fine, otherwise it errors. This works if closeDate is not NULL, otherwise it displays MM/dd/yyyy (in that format, not date format, does not display date) This works if closeDate is null (displays nothing), or contains a date. This is what you want to use.

Add a directory of files to a datagrid For greater control, you can , then bind the dataset to the datagrid.

<p>There are three ways to avoid the "Division by zero encountered" error in your SELECT statement and these are as follows:</p> <ul> <li>CASE statement</li> <li>NULLIF/ISNULL functions</li> <li>SET ARITHABORT OFF and SET ANSI_WARNINGS OFF</li> </ul>

This article adds the files in a directory (with wildcards) into a datatable, then to a dataset. With slight modifications to this function you can return the file list as a dataset, datatable or string array. See Private Sub TabArchivesEvents() Dim archivePath As String Dim dirInfo As DirectoryInfo archivePath = System.Configuration.ConfigurationSettings.AppSettings("ExecutiveAnalysisArchivesFolder") & Me.DLR_ID & "\" If Directory.Exists(archivePath) Then dirInfo = New DirectoryInfo(archivePath...

The following are some of the most used shortcuts that lets you navigate through your screen environment. Note that unless modified by your .screenrc, by default every screen shortcut is preceded by CtrlNote that these shortcuts are case-sensitive (so use shift A and K...) Dont forget to hit Ctrl 0 through 9 - Switches between windows CtrlBackspace - Switches to the previous available CtrlA - Changes window session name K - Kills a window session c - Creates a new window ' Default screens scree...

Overview of the nfs server options I choose See man exportfs and http:www.troubleshooters.com/linux/nfs.htm for NFS server option details. Also CentOS docs are great for NFS client/serve details http:www.centos.org/docs/5/html/Deployment_Guide-en-US/ch-nfs.html secure server must be started by root because it will use ports lower than 1024 rw enable read and write sync data must be fully synced to disk, this prevents corruption if a server crashes no_wdelay I use this because my nfs re...

<p>This document describes a small portion of iptables and how to setup a basic firewall using iptables. There are many huge books on iptables so I cannot go into any sort of detail here. If you want to create a more advanced firewall, then I suggest installing shorewall and reading the documentation <a class="urlLink" href="http://www.shorewall.net/Introduction.html" onclick="window.open(this.href, '_blank'); return false;">http://www.shorewall.net/Introduction.html</a> about setting it up. I generally use shorewall on my systems and configure them using <a class="urlLink" href="http://www.webmin.com/" onclick="window.open(this.href, '_blank'); return false;">http://www.webmin.com/</a>.</p>

How to turn Internet Explorers Extensions Off Pass the parameter -extoff to iexplorer.exe to disable add-ons You can create a shortcut with extension off by settings the target to "%PROGRAMFILES%\Internet Explorer\iexplore.exe" -extoff Start In would be: %HOMEDRIVE%%HOMEPATH% Note: Attached to this article is a ready made link, just rename it from ....ln_ to ....lnk Keywords > IE7 Internet Explorer Add-ons addons extension off disable

For i = 0 To lstRecipients.Items.Count - 1 If lstRecipients.Items(i).Selected Then tmp = lstRecipients.Items(i).Value 'This is the selected users ID from tblLogin (not email) lstRecipients.Items(i).Selected = False End If Next

Item Amt. Carb Cal. Time Granola Bar .05 19g 90 8:30a http:www.essortment.com/lifestyle/dietarysuppleme_sluf.htm Do not add Vitamins A and D as supplements unless you now you are deficient. They are fat-soluble, meaning they are stored in the liver and adipose tissue and are not easily excreted. Taking too much of these vitamins is toxic. Vitamin A - Dark green and yellow fruits and vegies. Eggs. Vitamin D - Egg yolks, fatty fish (tuna, salmon, sardines, herring), fortified milk. 15 minutes, 3...

Very handy VBScript, watches a process during a certian time interval, if it's running good, if not start it unless it's beyond the time interval, then kill it. Good if you want a program to run between 1pm-5pm but not the rest of the time. Hook this up to a scheduled task and exec every 10 minutes to ensure app is running or app is dead. IF the process is down in the time frame, it will start it, and send out an email that it was down. See You must edit the script below. Must set the process t...

<p>This script accepts a path (ex: c:\temp\*.* or c:\*.txt) and builds a 1 dimensional array of the files that match the directory/wildcard.</p>

dim filesys set filesys=CreateObject("Scripting.FileSystemObject") If filesys.FileExists("c:\sourcefolder\anyfile.html") Then filesys.MoveFile "c:\sourcefolder\anyfile.html", "c:\destfolder\" End If Get the last modified date and time of a file Private Function FileDateTime(byVal pathname) Dim objFSO, objFile On Error Resume Next Set objFSO = Server.CreateObject("Scripting.FileSystemObject") Set objFile = objFSO.GetFile(pathname) If Err Then FileDateTime = Null Else FileDateTime = CDate( objFil...

<p>Using the simple HTML <pre> tag with tabs often returns a bad result. The HTML parser will just convert those tab characters into spaces, an exact amount of spaces each time leaving you with uneven tabs.</p> <p><strong>Like this</strong><br /> <div class="code_outer"><span class="code_header">Code Snippet</span><pre class="code"><code>test one te two testing three </code></pre></div> </p>

Date and time function tutorials and examples in MSSQL This topic contains a few of the MSSQL date functions and some useful snippets. Dates can get a little confusing in SQL but a good knowledge of their functions is critical for most data queries. Since the date manipulation queries are quite large, its best to set a @variable and reference that variable throughout the code. Remember that the SQL data type has hours, minutes, seconds and sometimes milliseconds also, so you must account for th...

function test() dim a a = "Hi there" test = a 'This returns a end function Option Explicit 'Check a process, restart it and send email alert, or kill process depending on time window 'Original script created by NetRes 'Modified by mReschke 2008-04-28 (converted to functions, actions change by time, email enhancements, globals, generic process killer) 'If process is NOT running between start/endHour then restart it and send an email if sendEmail = true 'If process is running outside of start/end...

This is just a function snippet, sends an email with attachments, must manually edit function with email and attachment parameters. Used in and Sub SendLogEmail() Set pc = CreateObject("Wscript.Network") Set iMsg = CreateObject("CDO.Message") Set iConf = CreateObject("CDO.Configuration") Set Flds = iConf.Fields Const schema = "http:schemas.microsoft.com/cdo/configuration/" dim emailBody Flds.Item(schema & "sendusing") = 2 Flds.Item(schema & "smtpserver") = "xxx.xxx.xxx.xxx" Flds.Item(schema & "...

Paths are the locations for executables which can be accessed from any location. echo $PATH PATH=$PATH:/dir/dir1 I downloaded UNace (an .ace acrhive extractor) I copied the unace folder to /usr/bin/ I added a path: PATH=$PATH:/usr/bin/unace now I can type unace anywhere, and it finds it from the path To edit a path for a user open $HOME/.bash_profile or to edit for all users edit /etc/profile In either file you will see: PATH=$PATH:$HOME/bin, just add paths to that, separate paths by a : PATH:$P...

<h1 class="heading1" id="toc0">Deny Root Login</h1><a href="#top"><div class="heading_top"></div></a> <p><strong>Never allow root ssh access and make sure all users are disabled except the ones you want, I use KUser KDE User Manager, all users are disabled by default except root and your login username.</strong></p> <ol> <li>Open /etc/ssh/sshd_config</li> <li>There should be a line remmed that says #PermitRootLogin yes, unrem that and change to no</li> </ol> <h1 class="heading1" id="toc1">Different Ports and IPs</h1><a href="#top"><div class="heading_top"></div></a> <p>If your clients do not have SSH access (web hosting for example), a<br /> good way to secure your box is to run SSH on an unknown port and IP, so<br /> that people do not know your SSH port, so can't brute force it.</p>

See LXF 114 p48, 'Banish Your Daemons' Runlevels are defined levels in which a linux operating system can start. Daemons (or services) are scripts/programs that run in the background constantly (like apache or mysql are services that are always running) and are usually executed at startup by the defined runlevel. Runlevels are identified by a number from 0 - 6, but each linux distribution may use those numbers a bit differently. Basically a runlevel determines which daemons to execute at startu...