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Book cover
Introduction to UNIX
Kate Wrightson
Joe Merlino

Shell Programming IV - Signals and Status

True or False

Click on the correct response for each question below.



1

Every command invoked in Unix generates an exit status.
A)TRUE
B)FALSE
2

Commands invoked in shell programs generate an exit status.
A)TRUE
B)FALSE
3

The "test" command returns a value of 1 if the expression it is evaluating is true.
A)TRUE
B)FALSE
4

Signals are a function of the shell.
A)TRUE
B)FALSE
5

A signal in Linux would be the same as a signal in Solaris.
A)TRUE
B)FALSE
6

The acronym PID stands for "program identification number"
A)TRUE
B)FALSE
7

The "send" command is used to send signals between 2 programs.
A)TRUE
B)FALSE
8

There are over 50 different signals that can be sent between programs.
A)TRUE
B)FALSE
9

Each signal has a name and a number. You can use either to identify the signal you wish to use.
A)TRUE
B)FALSE
10

Signals are trapped with the "trap" command.
A)TRUE
B)FALSE




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