What are some of the differences between the file system concept of Linux and that of other operating systems?
What will be an ideal response?
The file system concept of Linux (and, in general, of all UNIX systems) is considerably different than that of other operating systems:
• Files in the file systems can be spread out over several devices. Each file system can be "mounted" any place in the directory hierarchy. With other file systems, each file system is placed on the same level, at the top. With Linux, the file systems can be placed at lower levels of the directory structure.
• A filename in Linux can be up to 255 characters long. It can contain special characters ("_" or "%", for example).
• Certain characters (the dollar sign "$", the semicolon ";", or the space, for example) have a special significance for shells, such as Bash. If you want to use one of these characters without the associated special meaning, the character must be preceded by a "\" (backslash) to mask (switch off) its special meaning.
• You can use umlauts, letters with diacritical marks, or other language-specific characters.
• Linux differentiates between upper-case and lower-case letters. For example, the file names Invoice, invoice, and INVOICE refer to three different files.
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In the context of enterprise resource planning (ERP) systems, the most efficient and effective ways to complete a business process are called _____.
A. current approaches B. streamlined processes C. best practices D. process improvements
Write a program that allows the user to practice typing. When the user clicks a button, the program generates and displays a random sequence of letters in an Entry component. The user repeats the sequence in another Entry component. When the user enters an incorrect letter, the pro- gram displays an error message until the user types the correct letter. Use keyboard events.
What will be an ideal response?
De?ne the following simple types:
a. A type whose domain consists of lists of strings, where each list consists of seven elements b. A type whose domain consists of lists of strings, where each string is of length seven c. A type whose domain is a set of lists of strings, where each string has between seven and ten characters and each list has between seven and ten elements d. A type appropriate for the letter grades that students receive on completion of a course—A, A?,B+,B,B?,C+,C,C?, D, and F. Express this type in two di?erent ways: as an enumeration and using the pattern tag of XML Schema.
When you want more information about a specific color in a document, use the ____ to show the color values beneath the mouse pointer.
a. Color selector b. Paint Bucket Tool c. Magic Wand Tool d. Info panel