scienceaide.com

systemnotesorg.blogspot.com

System Notes Org: How to Copy and Paste in Linux and Windows

http://systemnotesorg.blogspot.com/2007/05/how-to-copy-and-paste-in-linux-and.html

Wednesday, May 9, 2007. How to Copy and Paste in Linux and Windows. This is a very simple topic, but sometimes little tips can save you a lot of time. First select the text, or item, or location to paste to:. Copy = Ctrl-c, or From the "Edit" menu, select "Copy". Cut = Ctrl-x, or From the "Edit" menu, select "Cut". Paste = Ctrl-v, or From the "Edit" menu, select "Paste". All of the above, plus:. Copy = Select text with the mouse. Paste = Click the middle mouse button. Another question people may have is ...

systemnotesorg.blogspot.com

System Notes Org: RHCE Study Notes - SMTP

http://systemnotesorg.blogspot.com/2007/04/rhce-study-notes-smtp.html

Friday, April 27, 2007. RHCE Study Notes - SMTP. Study notes for any exam are difficult enough to find, but RHCE material seems even more scarce. This article tells how to prepare for one of the objectives, which is configuration of an SMTP server. I wrote up some study notes as I was preparing for the RCHE exam. Here are some quick notes based on the official RedHat objectives. Labs, and possible questions I thought might be reasonable requests. Install sendmail, sendmail-cf, sendmail-doc (optional).

systemnotesorg.blogspot.com

System Notes Org: How to Hide Files and Directories in Linux

http://systemnotesorg.blogspot.com/2007/05/how-to-hide-files-and-directories-in.html

Saturday, May 12, 2007. How to Hide Files and Directories in Linux. In Linux, directories are not accessible until the device is mounted. This is usually done at startup by the mount command which uses the /etc/fstab file. Files that start with a dot "." are hidden, but not completely (you can do ls -a to see the files). An example is the /.bashrc file. You can also hide files in a directory name that starts with a dot, e.g. /.ssh. Now for the real trick. Dev/hda1 on /boot type ext3 (rw). Data Recovery: ...

systemnotesorg.blogspot.com

System Notes Org: Using bash and sed to Modify a Text File

http://systemnotesorg.blogspot.com/2007/04/using-bash-and-sed-to-modify-text-file.html

Thursday, April 12, 2007. Using bash and sed to Modify a Text File. This shell script demonstrates how to write to a text file, and then modify the contents. This is really only a one line script, commonly referred to as a on-liner, so we don't really need a bash script, as long as we understand the regular expressions we are trying to use. From the command line, we can insert a word:. Sed -e 's/apple/& pear/g' test.txt. Look at the difference here. The word "pear" is either inserted or appended:. We did...

systemnotesorg.blogspot.com

System Notes Org: CPAN on Windows

http://systemnotesorg.blogspot.com/2011/09/cpan-on-windows.html

Tuesday, September 6, 2011. When trying to install Catalyst on Windows, I noticed some differences between Windows XP and Windows 7 64-bit installation of ActiveState perl. Namely, that dmake, and gcc would not install on the 64-bit version of Windows. Here are some of the problems I had. C: Documents and Settings scottm cpan. Gccexe: Extraneous argument to `- ' option. Gccexe: No input files specified. Set up gcc environment -. To install dmake and the MinGW gcc compiler using the Perl Package Manager.

systemnotesorg.blogspot.com

System Notes Org: Use awk to Extract a Column from a Text File

http://systemnotesorg.blogspot.com/2013/05/use-awk-to-extract-column-from-text-file.html

Saturday, May 25, 2013. Use awk to Extract a Column from a Text File. Here is an example of how to use awk to extract a column from a text file. The default field separator is a space, so this will work with some text files:. Cat somefile.txt awk '{print $2}'. But, if the fields are separated by a delimiter, such as tab, or comma, just specify the field separator by using "-F" before the print statement. Cat somefile.txt awk -F" t" '{print $2}'. Here is the process. 1) Run a Stock Screen. Deluxe Corp DLX...

systemnotesorg.blogspot.com

System Notes Org: May 2013

http://systemnotesorg.blogspot.com/2013_05_01_archive.html

Saturday, May 25, 2013. Use awk to Extract a Column from a Text File. Here is an example of how to use awk to extract a column from a text file. The default field separator is a space, so this will work with some text files:. Cat somefile.txt awk '{print $2}'. But, if the fields are separated by a delimiter, such as tab, or comma, just specify the field separator by using "-F" before the print statement. Cat somefile.txt awk -F" t" '{print $2}'. Here is the process. 1) Run a Stock Screen. Deluxe Corp DLX...

systemnotesorg.blogspot.com

System Notes Org: Data Recovery: 5 Things You Must Know

http://systemnotesorg.blogspot.com/2010/06/data-recovery-5-things-you-must-know.html

Friday, June 18, 2010. Data Recovery: 5 Things You Must Know. Here is a short list of categories, roughly in order of increasing level of difficulty to recover. Backups and off-site storage. Data Recovery from Hard Drives. Obviously, when there are reliable backups, there should be little difficulty in restoring the data, but it may not be as easy as it sounds. Some of the problems with backup and restore procedures could be:. The data may be outdated. The missing data may not have been backed up yet.

systemnotesorg.blogspot.com

System Notes Org: Using nmap to Generate Host Lists

http://systemnotesorg.blogspot.com/2007/04/using-nmap-to-generate-host-lists.html

Monday, April 2, 2007. Using nmap to Generate Host Lists. An easy way to get a list of hosts from a single domain that you are a part of, is to query DNS. Host -l mydomain.com. But that is not always practical. Sometimes you have machines that are in different domains, but they all are part of a network you manage. Rather than trying write a script that pings hosts and reports the output, just use nmap for a very fast scan. To scan all hosts in a list of subnets. Nmap -sP -R -iL subnets.dat. Of course th...

systemnotesorg.blogspot.com

System Notes Org: January 2014

http://systemnotesorg.blogspot.com/2014_01_01_archive.html

Thursday, January 9, 2014. Get a List of rpms for a Specific Program or Version. Systems that use rpm as the package manager can often be managed by using yum, but sometimes a simple rpm command can quickly give the required information. The RPM Package Manager has a huge number of options, but most commonly only a few are used on a regular basis. Get a list of rpms for mysql-5.1. Check for mysql version 5.1. Of course we can use egrep, and sort to get a more specific list. Rpm -qa grep mysql xargs rpm -e.