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Editor to share with you what are the examples of Sed tools, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

1. For the lines between template test and west, add the string aaa bbb to each line

Sed'/ test/,/west/s/$/aaa bbb/' file

2. Find all aa bbb between line1 and line2 and replace them with AA BBB

Sed'/ line1/,/line2/s/aa bbb/AA BBB/' test.sh

3. Match keywords and display the next few lines

Sed-n'/ 3Unip a.sh: displays the first match to 3, to the last line of output

Sed-n'/ 3p' a.sh: display the first match to the 3, to the next 2 lines of output

4. Display the text content in reverse order

Sed'1s Gentleman / etc/passwd

5. Take out the last line of the text

Sed'$! n / etc/passwd

6. Delete all original blank lines, and then add a blank line after all non-blank lines

Sed'/ ^ $/ dscape G' / etc/passwd

7. Add a blank line after each original line

I hope you can use your hands to solve this remaining problem, and we will share the methods for you in tomorrow's sharing.

8. Display the line number of the last line, which can be used to display the total line of text

Sed-n'$='/ etc/fstab

9. Display the line number of all lines, but the blank line does not display the line number

Sed'/. / ='/ etc/fstab

10. Print odd or even lines using n or p

Sed-n'ptern 'test.txt # Odd Line

Sed-n'ntern 'test.txt # even number lines

Sed-n '1lines 2p' test.txt # Odd lines

Sed-n'2p 'test.txt # even lines

The above is all the contents of the article "what are the examples of Sed tool applications?" Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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