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Exam Code : LFCS
Exam Name : Linux Foundation Certified System Administrator
Vendor Name :
"Linux-Foundation"

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Linux-Foundation

LFCS

Linux Foundation Certified System Administrator

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Question #241

Given a file called birthdays containing lines like: YYYY-MM-DD Name -

1983-06-02 Tim

1. 1995-12-17 Sue

   Which command would you use to output the lines belonging to all people listed whose birthday is in May or June?

   
   

   1. grep '[56]' birthdays

   2. grep 05?6? birthdays

   3. grep '[0-9]*-0[56]-' birthdays

   4. grep 06 birthdays | grep 05

Answer: C Question #242

The script, script.sh, consists of the following lines:

#!/bin/bash echo $2 $1

Which output will appear if the command, ./script.sh test1 test2, is entered?

1. test1 test2

2. test2 test1

3. script.sh test2

4. script.sh test1

5. test1 script.sh

Answer: B Question #243

Which approach will provide a listing of the contents in a tar archive?

1. Use the tar command with -t.

2. Use the grep command.

3. Use the find command.

4. Use the zless command.

5. Use the zlist command.

Answer: A Question #244

Which character starts a comment line in a shell script file?

1. ;

2. *

3. #

4. /

Answer: C

What is the output of the following command sequence? for token in a b c; do

echo -n "$token "; done

1. anbncn

2. a b c

3. "a " "b " "c "

4. token token token

5. abc

Answer: B Question #246

What is the correct command to extract the contents of the archive file download.bz2?

1. unpack download.bz2

2. unzip2 download.bz2

3. bunzip2 download.bz2

4. unzip download.bz2

5. uncompress download.bz2

Answer: C Question #247

Which command chain will count the number of regular files with the name of foo.txt within /home?

1. ls -lR /home | grep foo.txt | wc -l

2. find /home -type f -name foo.txt | wc -l

3. find /home -name foo.txt -count

4. find /home -name foo.txt | wc -l

5. grep -R foo.txt /home | wc -l

Answer: B Question #248

Which of the following command sequences overwrites the file foobar.txt?

1. echo "QUIDQUIDAGIS" >> foobar.txt

2. echo "QUIDQUIDAGIS" < foobar.txt

3. echo "QUIDQUIDAGIS" > foobar.txt

4. echo "QUIDQUIDAGIS" | foobar.txt

Answer: C Question #249

Which of the following commands redirects the output of cmd to the file foo.txt, in which an existing file is overwritten?

1. cmd || foo.txt

2. cmd | foo.txt

3. cmd && foo.txt

4. cmd >> foo.txt

5. cmd > foo.txt

Answer: E Question #250

What does the exit status 0 indicate about a process?

1. The process ended without any problems.

2. The process was terminated by the user.

3. The process couldn't finish correctly.

4. The process waited for an input but got none.

5. The process finished in time.

Answer: A Question #251

Which of the following commands will output all of the lines with the name Fred in upper or lower case but not the word red from the file data_file? (Choose two)

1. grep -v fred data_file

2. grep '[f]red' data_file

3. egrep fred data_file

4. grep '[Ff]red' data_file

5. grep -i fred data_file

Answer: DE Question #252

The output of the program date should be saved in the variable actdat. What is the correct statement?

1. actdat=`date`

2. set actdat='date'

3. date | actdat

4. date > $actdat

5. actdat=date

Answer: A Question #253

SIMULATION -

What two character sequence is present at the beginning of an interpreted script? (Please specify the TWO correct characters only)

Answer: #! Question #254

How can the current directory and its subdirectories be searched for the file named MyFile.xml?

1. find . -name MyFile.xml

2. grep MyFile.xml | find

3. grep -r MyFile.xml .

4. less MyFile.xml

5. search Myfile.xml ./

Answer: A

Which of the following commands will set the variable text to olaf is home? (Choose two)

1. text=olaf\ is\ home

2. text=$olaf is home

3. $text='olaf is home'

4. text=='olaf is home'

5. text="olaf is home"

Answer: AE Question #256

Which of the following commands will create an archive file, named backup.tar, containing all the files from the directory /home?

1. tar /home backup.tar

2. tar -cf /home backup.tar

3. tar -xf /home backup.tar

4. tar -xf backup.tar /home

5. tar -cf backup.tar /home

Answer: E

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