Chapter 5 quiz
False
A popular use of pr is to convert lowercase characters to uppercase characters. True
Korn
Bash is a freeware derivative of the Bourne and ____ shells.
five
By default, each page in the output of pr has a ____-line header, which, by default, contains the current file’s name, its last modification date, the current page, and a trailer consisting of blank lines
66
By default, pr formats the specified files into single-column pages of ____ lines.
./
One way to run a shell script is to make it executable by using the x permission and then typing ____ prior to the script name when you run the script itself.
comm
The ____ command locates identical lines within two identically sorted files.
uniq
The ____ command removes duplicate lines from a file
printf
The ____ function within the awk command is used to format output.
-B
The ____ option of the diff command does not compare for blank lines.
-b
The ____ option of the diff command ignores blanks that repeat.
-y
The ____ option of the diff command is used to display the differences side-by-side in columns.
-c
The ____ option of the diff command shows lines surrounding the line that differs.
-v
The ____ option of the grep command displays only lines that do not contain the search pattern.
-u
The ____ option of the uniq command instructs it to generate as output only the lines of the source file that are not duplicated successively.
pipe operator (|)
The ____ redirects the output of one command to the input of another command.
True
The pipe operator can connect several commands on the same command line.
a\
To append new lines in sed, you must use the ____ command
%d
When using the printf function, ____ indicates that the output is to appear in decimal digits.
False
You can use the < operator to redirect a command’s output from the screen to a file.
True
You can use the less command with a directory to view its contents one screen at a time, such as less /sbin.
True
You can use the vi editor to create script files.
pound (#)
You use the ____ character in script files to mark comments.
grep
You use the ____ command to search for a specified pattern in a file, such as a particular word or phrase.
sed
____ is NOT a selection command.
Awk
____ is a full-featured programming language.
uniq
____ is a selection command.
diff
compares and selects differences in two files
comm
compares sorted files and shows differences
wc
counts characters, words, or lines in a file
sed
edits data streams
pr
formats and prints
cut
selects columns (fields)
grep
selects lines or rows
sort
sorts and merges multiple files
tr
translates and deletes character by character
