Algorithm (Workflow)

This function, unixgrep, is designed to search for a specific string within files, similar to the Unix grep command. It is part of the SolidGeometry library.

Input Parameters

• sstr: The search string that the function will look for within the files.
• greps: (Optional) The file or files to search within. If not provided, it defaults to all files with the pattern '*.*'.

Output

• b: The result of the grep operation, which is typically the lines from the files that contain the search string.

Algorithm Steps

1. The function begins by determining the files to search. It uses the helper function getfuncparams to retrieve the greps parameter. If greps is not provided, it defaults to '*.*', meaning all files.
2. The function constructs a Unix command string using sprintf. This command uses the grep command to search for the sstr within the specified greps files.
3. The constructed command is executed using the unix function, which runs the command in the system's shell.
4. The output of the unix command is captured, and the relevant result is stored in the variable b.

Example Usage

To search for the string 'PLcircle' in all files, you would call the function as follows:

unixgrep('PLcircle')

This will search for 'PLcircle' in all files matching the pattern '*.*' and return the lines containing this string.