Shell Scripting Interview Questions & Answers part 3
Q: – How do you write a while loop in shell?
Use While Loop
Q: – How do you read keyboard input in shell scripts?
Use read command
Q: – What is GUI Scripting?
Graphical user interface provided the much needed thrust for controlling a computer and its applications. This form of language simplified repetitive actions. Support for different applications mostly depends upon the operating system. These interact with menus, buttons, etc.
Q: – Explain the term “loops”?
Loops enable you to execute a series of commands multiple times. Two main types of loops are the while and for loops.
Q: – What is “Nested Loops”?
When a loop is located inside the body of another loop it is said to be nested within another loop.
Q: – What is “Infinite Loops”?
Loops that execute forever without terminating.
Q: – What is “File Descriptor”?
An integer that is associated with a file. Enables you to read and write from a file using the integer instead of the file's name.
Q: – Explain “STDIN”?
STDINStandard Input. User input is read from STDIN. The file descriptor for STDIN is 0.
Q: – Explain “STDOUT”?
STDOUTStandard Output. The output of scripts is usually to STDOUT. The file descriptor for STDOUT is 1.
Submitted By:-Naveen Kumar Email-ID: – firstname.lastname@example.org