How to print a range of columns using the 'awk' command

1. How do I print multiple columns in awk?
2. How do I print all columns in awk?
3. How do I print multiple lines in awk?
4. How do I print the last column in awk?
5. How do I print on awk?
6. What is NR in awk command?
7. What is awk F?
8. How do I print the second last column in awk?
9. What is awk script?
10. How do I print line numbers in awk?
11. How do I print rows in awk?
12. How do I print multiple lines in bash?

How do I print multiple columns in awk?

How to do it...

1. To print the fifth column, use the following command: $ awk ' print $5 ' filename.
2. We can also print multiple columns and insert our custom string in between columns. For example, to print the permission and filename of each file in the current directory, use the following set of commands:

How do I print all columns in awk?

Using awk to print all columns from the nth to the last

1. As an aside, the grep | awk is an antipattern -- you want awk '/!/ print $2 ' – tripleee Sep 18 '15 at 9:34.
2. Unix "cut" is easier... ...
3. Possible duplicate of print rest of the fields in awk – acm Mar 15 '17 at 8:25.
4. @tripleee: I'm so happy that you mentioned this - I'm frustrated at seeing it everywhere! –

How do I print multiple lines in awk?

Similarly, to print 2 lines, you can simply put: N;N;p. Example 7 onwards explains for printing multiple lines following the pattern. 3. awk has the getline command which reads the next line from the file.

How do I print the last column in awk?

As soon as you will hit the Enter key, all the values of the last column of the file awk. txt will appear on your terminal as shown in the following image. The awk command will read this column whereas the print command will be responsible for displaying its values on the terminal.

How do I print on awk?

To print a blank line, use print "" , where "" is the empty string. To print a fixed piece of text, use a string constant, such as "Don't Panic" , as one item. If you forget to use the double-quote characters, your text is taken as an awk expression, and you will probably get an error.

What is NR in awk command?

NR is a AWK built-in variable and it denotes number of records being processed. Usage : NR can be used in action block represents number of line being processed and if it is used in END it can print number of lines totally processed. Example : Using NR to print line number in a file using AWK.

What is awk F?

awk -F: 'print $4' awk - this is the interpreter for the AWK Programming Language. The AWK language is useful for manipulation of data files, text retrieval and processing. -F <value> - tells awk what field separator to use. In your case, -F: means that the separator is : (colon).

How do I print the second last column in awk?

Print second-to-last column/field in `awk`

1. NF is the last field index, $NF is the value of the last field – glenn jackman Jan 19 '10 at 21:00.
2. that makes sense now. thats why the dollar outside the parenthesis works I suppose – Brian G Feb 11 '10 at 17:09.

What is awk script?

Awk is a scripting language used for manipulating data and generating reports. The awk command programming language requires no compiling, and allows the user to use variables, numeric functions, string functions, and logical operators. ... Awk is mostly used for pattern scanning and processing.

How do I print line numbers in awk?

1 Answer

1. grep -n 'bla' file.
2. alternatively awk : awk '/bla/print NR":"$0' file.
3. alternatively perl : perl -ne 'print $.,":",$_ if /bla/' file.
4. alternatively sed : sed '/bla/!d;=' file |sed 'N;s/\n/:/'

How do I print rows in awk?

Using AWK to Filter Rows

1. awk "print NF" < pos_cut.txt | uniq.
2. awk 'print $1 $2' pos_cut.txt.
3. awk '/2410626/' pos_cut.txt.
4. awk ' if($8 >= 11000000) print ' pos_cut.txt | head.
5. awk -F "\t" ' if(($7 == 6) && ($8 >= 11000000)) print ' pos_cut.txt | tail.

How do I print multiple lines in bash?

How to print multiple line string on bash

1. String literal. String Literal. text = " First Line. Second Line. Third Line. "
2. Use cat. cat. text = $(cat << EOF. First Line. Second Line. Third Line. EOF. )