Korn Shell: Unix and Linux Programming Manual, Third Edition, The

Executing Korn Shell Scripts

Let's make a Korn shell script out of the print Hello world command by putting it into a file like this:

					$ print "print Hello world" >prhello
				

Before Korn shell scripts can be executed, they must be made executable by setting the execute and read bits with the chmod command:

					$ chmod 755 prhello
				

or

					$ chmod +rx prhello
				

Assuming that the current directory is in the search path $PATH, prhello can now be executed by simply invoking it by name:

					$ prhello
					Hello world
				

Korn shell scripts can also be executed by invoking them as the first argument to ksh:

					$ ksh prhello
					Hello world
				

Now we can use prhello like any other command. The output can be directed to a file:

					$ prhello >p.out
					$ cat p.out
					Hello world
				

It can ...