101-400 試験問題を無料オンラインアクセス

In Bash, inserting 2>&1 after a command redirects:

• A.standard outputto standard input.
• B.standard error to standard input.
• C.standard output to standard error.
• D.standard error to standard output.
• E.standard input to standard error.

What is the effect of the egrep command when the -v option is used?

• A.It enables color to highlight matching parts.
• B.It shows the command's version information.
• C.It only outputs non-matching lines.
• D.It changes the output order showing the last matching line first.

CORRECT TEXT
Which command displays a list of all background tasks running in the current shell?
(Specify ONLY the command without any path or parameters.)

Which of the following files, located in the user home directory, is used to store the Bash history?

• A..history_bash
• B..bashrc_history
• C..bash_history
• D..bash_histfile
• E..history

Which of the following commands prints a list of usernames (first column) and their primary group (fourth column) from the /etc/passwd file?

• A.fmt -f 1,4 /etc/passwd
• B.cut -d : -f 1,4 /etc/passwd
• C.paste -f 1,4 /etc/passwd
• D.split -c 1,4 /etc/passwd