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Today, the editor will share with you the relevant knowledge points about how AWK prints out the content of the document. The content is detailed and the logic is clear. I believe most people still know too much about this, so share this article for your reference. I hope you can get something after reading this article. Let's take a look at it.

Test text score.txt

Aaron Physics 87

Abel Maths 98

Rahul Chinese 90

Buck Biology 87

Byron English 85

Dave History 89

Enoch Chemistry 89

/ / print out the contents of the file.

[root@vagrant-centos65 awk] # awk'{print $0} 'score.txt

Aaron Physics 87

Abel Maths 98

Rahul Chinese 90

Buck Biology 87

Byron English 85

Dave History 89

Enoch Chemistry 89

/ / print the first column.

[root@vagrant-centos65 awk] # awk'{print $1} 'score.txt

Aaron

Abel

Rahul

Buck

Byron

Dave

Enoch

/ / print the last column.

[root@vagrant-centos65 awk] # awk'{print $NF} 'score.txt

eighty-seven

ninety-eight

ninety

eighty-seven

eighty-five

eighty-nine

eighty-nine

/ / print the first line.

[root@vagrant-centos65 awk] # awk 'NR==1 {print $0}' score.txt

Aaron Physics 87

/ / print out the last line.

[root@vagrant-centos65 awk] # awk 'END {print}' score.txt

Enoch Chemistry 89

/ / print out the specified column of the specified row. For example, the fourth row and the second column

[root@vagrant-centos65 awk] # awk 'NR==4 {print $2}' score.txt

Biology

/ / output columns through matching pattern strings.

[root@vagrant-centos65 awk] # awk'/ b / {print $0} 'score.txt

Abel Maths 98

/ / output columns in any order.

[root@vagrant-centos65 awk] # awk'{print $2 "\ t" $1} 'score.txt

Physics Aaron

Maths Abel

Chinese Rahul

Biology Buck

English Byron

History Dave

Chemistry Enoch

/ / the beginning of the line matches.

[root@vagrant-centos65 awk] # awk'/ ^ A big 'score.txt

Aaron Physics 87

Abel Maths 98

[root@vagrant-centos65 awk] # awk'/ ^ Bram 'score.txt

Buck Biology 87

Byron English 85

/ / the line ends the match.

[root@vagrant-centos65 awk] # awk'/ 89 $/ 'score.txt

Dave History 89

Enoch Chemistry 89

These are all the contents of the article "how to print out the contents of a document by AWK". Thank you for reading! I believe you will gain a lot after reading this article. The editor will update different knowledge for you every day. If you want to learn more knowledge, please pay attention to the industry information channel.

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