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Exam XK0-004 All Questions

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Exam XK0-004 topic 1 question 244 discussion

Actual exam question from CompTIA's XK0-004
Question #: 244
Topic #: 1
[All XK0-004 Questions]

A Linux administrator recently changed the IP addresses of all the web servers from 10.10.50.x to 10.10.100.x. The administrator needs to update the serverlist.txt file to reflect the change.
The file contains the following:
10:WebSvr01:10.10.50.21:Main
11:WebSvr02:10.10.50.22:Acconting
12:WebSvr03:10.10.50.23:Intranet
20:NFS01:10.10.20.21:FileServer
30:SMTP01:10.10.30.31:Email
Which of the following commands will change the IP addresses and update the files in place?

  • A. sed 's|.50|.100|g' serverlist.txt
  • B. sed -g 's|.50|.100|a' serverlist.txt
  • C. sed -i 's|.50|.100|' serverlist.txt
  • D. sed -i 's|.50|.100|g' serverlist.txt
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by J_Dawg at Sept. 22, 2021, 7:15 p.m.

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J_Dawg
Highly Voted 3 years, 7 months ago
Both C and D would work. Since the match only occurs once on the line, the 'g' is not necessary.
upvoted 5 times
melekhov88
3 years, 5 months ago
I think it needs to be "C". in case of address 10.10.50.50 -> command "D" will convert it into 10.10.100.100
upvoted 5 times
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saci_frosty
Most Recent 2 years, 5 months ago
Selected Answer: A
sed 's/.50/.100/g' serverlist.txt There are 3 instances of .50 to be replaced on the file. Unless of course if it is a typo than it should be D. --i, --in-place [=SUFFIX] Perform edits in-place by overwriting the original file.
upvoted 3 times
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Tlin
2 years, 6 months ago
The answer is C just confirmed in my lab. A will change the file temporarily. D returns an error.
upvoted 2 times
edwram
2 years, 6 months ago
you are correct C is the answer, retested and saw that you were correct.
upvoted 2 times
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edwram
2 years, 6 months ago
Selected Answer: A
A is correct Replacing all the occurrence of the pattern in a line : The substitute flag /g (global replacement) specifies the sed command to replace all the occurrences of the string in the line. $sed 's/unix/linux/g' geekfile.txt
upvoted 1 times
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C (25%)
B (20%)
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