Lpi 010-160 問題集

質問 1：
Which of the following commands adds the directory/new/dir/to thePATHenvironment variable?
A. export PATH=/new/dir: $PATH
B. $PATH=/new/dir: $PATH
C. PATH=/new/dir: PATH
D. export $PATH=/new/dir: $PATH
E. export PATH=/new/dir: PATH
正解：E
解説: (Topexam メンバーにのみ表示されます)

質問 2：
Which of the following commands finds all lines in the file operating-systems.txt which contain the term linux, regardless of the case?
A. cut linux operating-systems.txt
B. igrep linux operating-systems.txt
C. cut [Ll] [Ii] [Nn] [Uu] [Xx] operating-systems.txt
D. grep -i linux operating-systems.txt
E. less -i linux operating-systems.txt
正解：D
解説: (Topexam メンバーにのみ表示されます)

質問 3：
A directory contains the following files:

What would be the output of the following shell script?
for file in *.txt

A. A. txt
B. txt
C. A.txt
D. c.cav
E. *.txt
F. a b
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 4：
What parameter of ls prints a recursive listing of a directory's content? (Specify ONLY the option name without any values or parameters.)
正解：
ls -R Explanation The -R parameter of the ls command prints a recursive listing of a directory's content, meaning that it will list not only the files and directories in the current directory, but also the files and directories in all the subdirectories12. For example, if you have a directory structure like this:
/home/user/dir1file1file2dir2file3file4
You can use the command ls -R /home/user/ to list all the files and directories recursively, and the output will look like this:
/home/user/: dir1 dir2
/home/user/dir1: file1 file2
/home/user/dir2: file3 file4
The -R parameter is also known as the --recursive option, which is the long form of the same parameter12.
You can use either -R or --recursive to achieve the same result.
References:
* Use ls Command Recursively - Linux Handbook
* How to List Files Recursively in Linux command line

質問 5：
What is true about a recursive directory listing?
A. It includes ownership information for the files.
B. It includes details of file system internals, such as inodes.
C. It includes the content of sub-directories.
D. It includes a preview of content for each file in the directory.
E. It includes the permissions of the directory listed.
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 6：
Which of the following programs are web servers? (Choose two.)
A. Dovecot
B. Apache HTTPD
C. NGINX
D. Postfix
E. Curl
正解：B,C
解説: (Topexam メンバーにのみ表示されます)