Chapter 1-3 questions & Answers
which of the following is not a valid command? - answer ls --forward
the -l option causes ls to display its results in long format. this format contains a great
deal of useful information. following is the examples directory from an ubuntu system.
-rw-r--r-- 1 root root 34391 2017-04-03 11:05 logo-Ubuntu.png
-rw-r--r-- 1 root root 32059 2017-04-03 11:05 oo-cd-cover.odf
-rw-r--r-- 1 root root 159744 2017-04-03 11:05 oo-derivatives.doc
-rw-r--r-- 1 root root 27837 2017-04-03 11:05 oo-maxwell.odt
-rw-r--r-- 1 root root 98816 2017-04-03 11:05 oo-trig.xls
-rw-r--r-- 1 root root 453764 2017-04-03 11:05 oo-welcome.odt
-rw-r--r-- 1 root root 358374 2017-04-03 11:05 ubuntu sax.ogg
which of the following is false w.r.t. this information? - answer ** the date and time
reflect when the file was originally created
command options, like filenames in linux, are case-sensitive - answer true
most commands use options which consist of a single character preceded by a dash,
for example, "-l". Many commands, however, including those from the GNU Project,
also support long options, consisting of what? - answer a word preceded by two
dashes
what does the following command accomplish? ls ~ /usr - answer lists both the
user's home directory (symbolized by the "~" character) and the /usr directory
there are many kinds of files. in fact, one of the common ideas in unix-like operating
systems such as lunix is that "everything is a file." - answer true
***(partial)which of the following are true statements? - answer - the less command
is a program to view text files that contain human-readable text. the less program
provides a convenient way to examine them.
-once started, the less program allows us to scroll forward and backward through a text
file
-computers only understand numbers and all data is converted to numeric
representation
as we explore the system it will be useful to know what files contain. to do this we will
use which of the following commands to determine a file's type? - answer file
which of the following is not a valid command? - answer ls --forward
the -l option causes ls to display its results in long format. this format contains a great
deal of useful information. following is the examples directory from an ubuntu system.
-rw-r--r-- 1 root root 34391 2017-04-03 11:05 logo-Ubuntu.png
-rw-r--r-- 1 root root 32059 2017-04-03 11:05 oo-cd-cover.odf
-rw-r--r-- 1 root root 159744 2017-04-03 11:05 oo-derivatives.doc
-rw-r--r-- 1 root root 27837 2017-04-03 11:05 oo-maxwell.odt
-rw-r--r-- 1 root root 98816 2017-04-03 11:05 oo-trig.xls
-rw-r--r-- 1 root root 453764 2017-04-03 11:05 oo-welcome.odt
-rw-r--r-- 1 root root 358374 2017-04-03 11:05 ubuntu sax.ogg
which of the following is false w.r.t. this information? - answer ** the date and time
reflect when the file was originally created
command options, like filenames in linux, are case-sensitive - answer true
most commands use options which consist of a single character preceded by a dash,
for example, "-l". Many commands, however, including those from the GNU Project,
also support long options, consisting of what? - answer a word preceded by two
dashes
what does the following command accomplish? ls ~ /usr - answer lists both the
user's home directory (symbolized by the "~" character) and the /usr directory
there are many kinds of files. in fact, one of the common ideas in unix-like operating
systems such as lunix is that "everything is a file." - answer true
***(partial)which of the following are true statements? - answer - the less command
is a program to view text files that contain human-readable text. the less program
provides a convenient way to examine them.
-once started, the less program allows us to scroll forward and backward through a text
file
-computers only understand numbers and all data is converted to numeric
representation
as we explore the system it will be useful to know what files contain. to do this we will
use which of the following commands to determine a file's type? - answer file
