Old boy Linux Practical training Junior class before the third class exam questions

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This article extracts from the old boy Linux actual operation and maintenance training Center Test questions
If reproduced, please be sure to keep the link and copyright information herein.
Welcome to Yun-Brother together to Exchange Linux/unix website operation and Maintenance technology!
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Mail:[email protected]
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[Purpose of examination]
1. After-school review and preview.
2. The future of practical work in the ability to do things.
3. Communication and oral presentation skills.

[Oral presentation Skills test questions]
1. Describe the startup process of Linux boot-to-login interface (2 minutes in memory)
2. Describe the differences between soft links and hard links under Linux. (2 minutes)
3.linux the difference between single and double or no quotes in the shell (2 minutes)
4.linux Run Level 0-6 (1 minutes in memory)
5. Describe the principle of file deletion under Linux (3 minutes)

[Technical skills written test questions]
Description
Please give the relevant command answer to the question, write to the bottom of the problem (if it is not can Baidu search, write the answer, the mark is Baidu searches to get (the question fraction halved)).
The following are the command results for the CentOS Linux root environment
Exam Scope:
Previous course content and homework (including preview content),

Exam questions (15): Total 100 points, required to complete within 15 minutes

1. How to obtain the file/etiantian the corresponding number of permissions, such as-rw-r--r--644, get 644 such a number.
Answer:

2.linux under the mkdir command to create a new directory/oldboy/ett, it is the number of hard links, why?
Answer:

3. Please execute the command to take out the IP address of eth0 in Linux (please use the cut, the ability can also be used separately awk,sed command answer).
Answer:

4. Please give the path of the Eth0 NIC profile and the path of the client DNS by default.
Answer:

5. Find all the files in the current directory and replace the www.etiantian.org string in the file with the www.oldboy.cc
Answer:

6. Question: How to give Oldboy file-rw-r--r-x permission properties
Answer:

7. Execute the following command when prompted to enter a password, please ask the password to enter which user's password.
[email protected] ~]$ sudo su-oldboy
Answer:

8. Question: What parameters can be added to a command to implement the contents of the following command in the same line output.
echo "Oldboy"; echo "Oldboy"
Answer:

9. Question: Please give an example of a date command in the following format: 11-02-26
Answer:

10. Achieve weekly output For example: Saturday output is 6
Answer:

11. Problem: Extended issue: Print three days ago date format as: 2011-02-26
Answer:

12. The contents of the known/oldboy/test.txt file are:
Oldboy

Xizi

Xiaochao
How to filter out the space in the file (requires command line implementation).
Answer:

13. The contents of the known/oldboy/ett.txt file are:
Oldboy
Olldboooy
Test
Please filter out the first two lines using grep or egrep regular match
Answer:

14-15. Please describe what the following path is for?
/var/log/message
/var/log/secure
/var/spool/clientmqueue
/proc/interrupts
/etc/fstab

Old boy Linux Practical training Junior class before the third class exam questions