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- How To Create Shell Scripts - Creating New Command Script File
this is a tutorial to help you get started in creating your own and very first linux shell script step by step instructions with commands 
Thu Aug 31, 2006
One of the most basic and useful program tools in the shell itself. Its also a powerful programming environmentStep 1.
Type the following command to create a new file:
cat > new_scriptStep 2.
Type the following lines:
echo Your files are
echo today is
Press ENTER to move the cursor to a new line and press CTRL-D. At this point, the file new_script
contains a series of shell commands.Step 3.
Examine the file to be certain it is correct:
If there are errors, remove the file new_script and return to step 1 to create it again.Step 4.
Try to run the script by entering its name:
It doesn't run because its not executable.Step 5.
Display the permission of the file by entering:
ls -la new_script
Notice that the file is not executable. You must make it executable.Step 6.
Type the following command to make new_script
chmod +x new_scriptStep 7.
To see the new permission, enter:
You now have execute permission, as well as read and write permissions for the file.Step 8.
Execute the new script by typing its name:
All the commands that you typed into the file are executed, and their output is sent to the screen.Step 9.
If you receive an error message such as:
Command not found
Type the following:
This command line tells the shell exactly where to find the shell script, new_script
, in your current directory knows as "dot."