How To Write First UNIX Korn Shell Script Program

by Vivek Gite · 3 comments

This entry is part 1 of 3 in the series UNIX Korn Shell Scripting

Can you tell me how to write a UNIX korn shell script program? I'm new to UNIX scripting and HP-UX UNIX operating system.

Korn shell scripting under UNIX / Linux can be used to automate lots of stuff. It easy to write a shell script. You must know how to use a text editor such as vi to write a script.

Writing your first Korn shell script

Let us write a shell program to print knowledge is power on screen. Type the following command to open file:
vi hello.ksh
The first line should be as follows:

#!/bin/ksh

It is called a shebang. It consists of a number sign and an exclamation point character (#!), followed by the full path to the interpreter such as /bin/ksh. All scripts under UNIX execute using the interpreter specified on a first line.
Next append code as follows:

# A shell script to print message
# Written by Tom - Jan/13/2008
print "Knowledge is power"

Save and close the file. At the end your script should look like as follows:

#!/bin/ksh
# A shell script to print message
# Written by Tom - Jan/13/2008
# ------------------------------
print "Knowledge is power"

Set executable permission

Type the following command to set executable permission:
chmod +x hello.ksh

Run your korn shell script

Type the following command:
./hello.ksh
Sample output:

Knowledge is power
Series NavigationKorn Shell Variables»

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{ 3 comments… read them below or add one }

1 Scott 12.08.08 at 9:06 pm

great job on youe xplainations. I enjoy your site

2 Suhail 06.16.09 at 4:57 am

Its a good intro and i had successfully wrote my first script, but its better to have a vi or any other editor tutorial mix with this, i first learn the vi and then this one, and it works.

Anyways a goood one. Thanks once again.

3 suraj bhagat 09.23.09 at 3:35 am

hi,
please give me some programs which r follows.

1)write a shell script program take two strings & check that the string are same or not

2) sript program to take marks of five subject of a students with name & display the grade in which he is passed .

3) enter a character from a user & check that itbis a lower case letter, upper case letter, digit, special char.

4)write a program to find the string is start with ovel, digita, or ends with digit, ovel & the word contains of five letters.

5)create a file student.dat which contain details of student as rool no.,name,want to be, on plattform, birthdate.

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