There are two ways you can execute your shell scripts. Once you have created a script file:
Method 1
Pass the file as an argument to the shell that you want to interpret your script.
Step 1 : create the script using vi, ex or ed
For example, the script file show has the following lines
echo Here is the date and time
date
<span style="color: #000000;"><strong>Step 2</strong> : To run the script, pass the filename as an argument to the sh (shell ) </span>
$ sh show
Here is the date and time
Sat jun 03 13:40:15 PST 2006
<span style="color: #000000;"><strong><span style="text-decoration: underline;">Method 2</span>:</strong></span>
Make your script executable using the chmod command.
When we create a file, by default it is created with read and write permission turned on and execute permission turned off. A file can be made executable using chmod.
Step 1 : create the script using vi, ex or ed
For example, the script file show has the following lines
echo Here is the date and time
date
Step 2 : Make the file executable
$ chmod u+x script_file
$ chmod u+x show
Step 3 : To run the script, just type the filename
$ show
Here is the date and time
Sat jun 03 13:40:15 PST 2006