Always save a backup of your data. An important aspect is a date when the backup was made. Today I will show you how to format the backup name so you know since you have. Select the database and go to the Export tag and Custom – display all possible options. If you select only… Read More »
Sometimes you have to rename files. This can be tiring when we do it manually. Command sed may be helpful in this case. I’ll take a simple example. I will create a working directory called work. We have to create files with the command:
1 2 | for (( i=1; i<10; i++ )); do echo data$i > data[$i]x[$i].txt;done |
The result should be :
1 2 3 4 | $ ls data[1]x[1].txt data[3]x[3].txt data[5]x[5].txt data[7]x[7].txt data[9]x[9].txt data[2]x[2].txt data[4]x[4].txt data[6]x[6].txt data[8]x[8].txt |
Try these commands to… Read More »
Open a blank page and write this text in Geany:
1 2 3 | This is a simple text. This is a simple text. This is a simple text. |
Press CTRL + H and make changes as shown below: The text will be ahead html paragraph tag. The text will be the end of the paragraph html tag end of each line. So I turned a simple text in html source code.
Start Blender 3D version 2.5 or higher. At the top, choose File from the menu and then User Preferences … or press keys Ctrl+Alt+U. See the picture below: Click the button Install Add-on … A dialog will appear and you can select the script with that addon. In this case his named free-tutorials2.org. The script… Read More »
We will present a more special method of using the Linux command line. This method comes in helping those who need to text or HTML content. In fact, a combination of Linux commands to get an output. Suppose we have a list of jpeg files in folder image. They should exist into HTML to be… Read More »
So I started dabbling with assembly language programming a couple of days ago. This was the next logical step in the “going lower down” move I have been doing ever since I started writing programs in Visual Basic some years ago (there, I admitted it). Since then I went through C#, Java, C++, C, and… Read More »
As we know, we used the following syntax will to create a default script bash. First line: signifies that is the bash script:
1 | #!/bin/bash |
Every line and everything after the # is treated as a comment:
1 | # this is a comment |
A shell variable may be assigned using the following syntax: variable=value_of_variable Example:
1 2 3 | $ a=10 $ echo $a 10 |
Try this command:
1 | $man bash |
1 2 3 4 5 6 7 8 9 | We'll see: ... Shell Variables The following variables are set by the shell: BASH Expands to the full file name used to invoke this instance of bash. BASH_ARGC ... and more |
Open one xterm or console. Use command cd /etc/init.d/ . You are now on /etc/init.d/ directory. Create a file named my_filename. Add your script to this file with the following lines at the top:
1 2 3 | #!/bin/bash # chkconfig: 345 85 15 # some description for your file |
Enter this in the shell: chkconfig –add my_filename Use command chmod u+x my_filenameto make this script executable. Type command:ntsysv You… Read More »