Optimistic Shell Script Exercise

How to successfully complete the shell script exercise?

Any suggestions on how to approach the given shell script exercise effectively?

Solution for the Shell Script Exercise

To successfully complete the shell script exercise, it is essential to follow the instructions provided in the script and apply various forms of shell command expansions. The exercise involves modifying the script assign1.sh to showcase the different types of processing the shell performs on the command line. By editing the echo lines in the script with the correct shell expansions, you can derive the intended outputs.

Explanation of the Shell Script Exercise

The given exercise requires editing the script assign1.sh to utilize brace expansion, tilde expansion, parameter expansion, command substitution, and pathname expansion to produce specific outputs. Each echo statement in the script needs to be modified according to the instructions provided to display the expected results.

Here's a breakdown of the steps to complete the shell script exercise:

Step 1: Brace Expansion

Use brace expansion ({}) to concatenate strings and generate the desired output.

Step 2: Tilde Expansion

Employ tilde expansion (~) to access the current user's .ssh directory.

Step 3: Parameter Expansion

Utilize parameter expansion ($) to display specific text and variables.

Step 4: Command Substitution

Apply command substitution ($(command)) to execute commands and display their outputs.

Step 5: Pathname Expansion

Use pathname expansion (*) to list all .sh files in the current directory.

Step 6: Running the Script

After editing the script, run it with the provided arguments (1 2 3 4 5 6 7 8 9) to verify the correct implementation of shell expansions and obtain the expected outputs.

By following these steps and leveraging different forms of shell expansions, you can successfully complete the shell script exercise and enhance your understanding of shell command execution in scripts.