2.5 The Korn Shell Constructs The Korn and Bash shells are very similar. The following constructs will work for both shells. To see all the subtle variations, see the individual chapters for these shells. Table 2.3. Korn Shell Syntax and Constructs 2.5.1 The Korn Shell Script Example 2.6. 1...
Korn Shell Programming by Example, Adobe ReaderDennis O'BrienDavid Pitts
To begin writing your first Korn shell script, you need to open the vi editor and add the shell name as the first line. After that, you need to build some type of script header telling users who wrote the script, what the script does, and when it was written. You can name your scr...
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As always, if you want to add comments to the script, write the comment info after the number symbol (#). Example: An example of a ksh shell script containing script header section The operators available in Korn shell Most of the Korn shell operators are similar to those in the C progr...
The following submenu.ksh example script first creates two variables, main_prompt and dessert_prompt, to hold the prompts for the main menu and the dessert submenu, respectively. The select loop for the main menu is exited when the user chooses Order Completed, at which time the script prints...
If . isn’t on your path, you must type ./ scriptname, which is really the same thing as typing the script’s relative pathname (see Chapter 1). Before you can invoke the shell script by name, you must also give it “execute” permission. If you are familiar with the Unix file...
I am attempting to write a korn shell script that 1) attaches the files resulting from a ls command to an email and 2) writes the results of a grep to the body of that email. My ls command is: ls *20210228.log My grep
The following example illustrates the difference between executing files as Korn shell scripts and reading/executing them using the .command. The .test file sets the variable X: $ cat .test X=ABC When the .test file is executed as a Korn shell script, variable X is not defined in the cur...
is to be returned, it instead returns the result as the value of the command. This allows the shell script to embed the command call in another command call. This feature only works for commands that return a single value, and the value is returned in the first parameter. For example: ...