Describe what file descriptors are, and then list three that can be used within the BASH shell, and discuss how they can be used.
What will be an ideal response?
Command input and output are represented by labels known as file descriptors. For each command that can be manipulated by the BASH shell, there are three file descriptors:?Standard input (stdin)Standard output (stdout)Standard error (stderr)?Standard input (stdin) refers to the information processed by the command during execution; this often takes the form of user input typed on the keyboard. Standard output (stdout) refers to the normal output of a command, whereas standard error (stderr) refers to any error messages generated by the command. Both stdout and stderr are displayed on the terminal screen by default.
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Answer the following statements true (T) or false (F)
1. Windows is not case sensitive, so you can type a file name all lowercase, all uppercase, or mixed case. 2. The first time a file is written to disk, its name, disk address, creation date, and other information are recorded in the directory. 3. When a disk is first formatted, a single root directory is created. 4. To simplify keeping track of files, a Windows user simply stores them all in the root directory. 5. Windows Explorer provides a view of the contents of one directory at a time.
Given the definitions below. Each occurrence of a const is a promise to the compiler that the compiler will enforce. What is the promise in each case?
``` const int x = 17; //a) class A { public: A( ); A(int n): int f( ) const; // b) int g(const A& x); // c) private: int i; }; ```
____ view shows the document on a mock sheet of paper in the document window.
A. Print Layout B. Navigation C. Web D. Options
If you want to export specific records in a table to Excel, you can either filter the table or create a query for the needed records
Indicate whether the statement is true or false