Bash Shell Scripting- Redirection Operators and STDIN, STDOUT & STDERR

The video tutorial explains the concepts of standard output and error in Linux, demonstrating how to handle them using redirection operators. It covers output and input redirection, combining outputs with pipelines, and managing standard output and error using file descriptors. The tutorial provides practical examples to illustrate these concepts, helping users understand how to redirect outputs to files and handle errors effectively.

What is the default device for standard input in Linux?

• Mouse

• Keyboard

• Monitor

• Printer

Which symbol is used to redirect command output to a file, potentially overwriting its content?

• |

• >

• <

• >>

How can you append new content to an existing file without overwriting it?

• Using '>'

• Using '>>'

• Using '|'

• Using '<'

Which symbol is used to redirect input from a file to a command?

• |

• <

• >>

• >

What is the purpose of the pipeline symbol '|' in Linux commands?

• To overwrite a file with command output

• To append output to a file

• To pass output of one command as input to another

• To redirect input from a file

Which file descriptor number is used for standard error?

• 3

• 2

• 1

• 0

How can you redirect only the error output of a command to a file?

• Using '1>'

• Using '2>'

• Using '>'

• Using '>>'

What is the shortcut to redirect both standard output and error to the same file?

• 1> file 2> file

• 2> file 1> file

• 1> file 2>&1

• 2> file 1>&2

Which command syntax allows you to store both success and error outputs into a single file using a shortcut?

• command > file

• command 2> file

• command &> file

• command >> file

What is the default file descriptor number for standard output?

• 1

• 0

• 2

• 3