Basics commands in Terminal Mac OSX

Here is the link where you can download PDF file about Basics of Terminal in Mac OSX:
http://homepage.mac.com/rgriff/files/TerminalBasics.pdf

How to add CODE block to Blogger post

If you want to add some code snippet to your post on Blogger just copy code snippet you need and go to this site http://www.simplebits.com. It has tools that will configure your snippet  (it will change some signs).

How to hide and show div block with Javascript

1. Javascript
Add to the header the script that will hide/show div you need

<script language="JavaScript">
    function toggle(id) {
        var state = document.getElementById(id).style.display;
            if (state == 'block') {
                document.getElementById(id).style.display = 'none';
            } else {
                document.getElementById(id).style.display = 'block';
            }
        }
</script>

2. CSS
In order to hide your div at the beginning add this to your CSS style:

#div1 {
        display:none;
}

HTML
In your HTML add hyperlink that will trigger the script for the id with the specific name:

<a href="#" onclick="toggle('div1');">Your text is here</a>

<div id="div1">
The content of this div will be hidden or shown after click on the link above.
</div>

Enter user directory in single mode Linux

Use this command:

sudo -i -u username
cd /local/home/username/

What if Host SMBus controller not enabled

Read this discussion:
http://communities.vmware.com/thread/144562

How delete all data from MySQL table

There are two ways to delete all the data in a MySQL database table.

TRUNCATE TABLE tablename; This will delete all data in the table very quickly. In MySQL the table is actually dropped and recreated, hence the speed of the query. The number of deleted rows for MyISAM tables returned is zero; for INNODB it returns the actual number deleted.

DELETE FROM tablename; This also deletes all the data in the table, but is not as quick as using the "TRUNCATE TABLE" method. In MySQL >= 4.0 the number of rows deleted is returned; in MySQL 3.23 the number returned is always zero.

Read more about it in this post:

http://www.electrictoolbox.com/article/mysql/delete-all-data-mysql/

How to list all tables in MySQL

If you want to see all tables created in your DataBase list them using this commands:

1. Enter to your DB
mysql db; (where db is the name for your DataBase)

2. Type
show tables;

How to reorder or rename logical interface names in Linux

Here is the link where you can read about this topic.
http://www.science.uva.nl/research/air/wiki/LogicalInterfaceNames

How to change permission in Linux

If you want to change the permission for some files or directories in Linux do this:


sudo -s
cd /dir1
find dir1/ -type f -perm 555 (if you just want to see that files)

find dir1/ -type f -perm 555 -exec chmod 644 {} \;
find dir1/ -type d -perm 555 -exec chmod 755 {} \;
ls -l

How to create TGZ archive with TAR

First of all: extension *.tar is the as tar.gz

Create tgz Archive with this command:
tar -cvzf newArchive.tgz sourceFileOrFolderNameForArchive


What is -cvzf:
c - "create" it means you want to create this archive
v - "verbose" if you want to see the process... it shows details about the results of running tar.
z - "zip" it means you want to compress file. tar will use the `compress' program.
f - "filename" it means you  want to name archive with the specific name.

If you want to read the TAR manual in Terminal type in Terminal man tar
Or read this here http://ss64.com/bash/tar.html