How do I print specific columns in awk?

Printing the nth word or column in a file or line

Table of Contents

To print the fifth column, use the following command: $ awk ‘{ print $5 }’ filename.
We can also print multiple columns and insert our custom string in between columns.

How do I print a third line in awk?

# Tell awk to print the third input record of the current file. awk ‘FNR==3 {print}’ my. txt.

How do you print the first 3 lines in Unix?

To look at the first few lines of a file, type head filename, where filename is the name of the file you want to look at, and then press . By default, head shows you the first 10 lines of a file. You can change this by typing head -number filename, where number is the number of lines you want to see.

How do I print a 5th line in Unix?

5 Sed ADDRESS Format Examples

This will match only Nth line in the input.
M~N with “p” command prints every Nth line starting from line M.
M,N with “p” command prints Mth line to Nth line.
$ with “p” command matches only the last line from the input.
N,$ with “p” command prints from Nth line to end of file.

How do I print a 3rd line in Linux?

“command to display the 3rd line of a file” Code Answer

# Take the last line of the top three lines. head -n 3 my. txt | tail -n 1.
# Tell sed to “be quiet”, and print just the third line. sed -n 3p my. txt.
# Tell sed to delete everything except the third line. sed ‘3! d’ my. txt.

What is awk ‘{ print $2 }’?

awk ‘{ print $2; }’ prints the second field of each line. This field happens to be the process ID from the ps aux output.

How do I print in 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.

How do you print the first 5 lines in Unix?

head command example to print first 10/20 lines

head -10 bar.txt.
head -20 bar.txt.
sed -n 1,10p /etc/group.
sed -n 1,20p /etc/group.
awk ‘FNR <= 10’ /etc/passwd.
awk ‘FNR <= 20’ /etc/passwd.
perl -ne’1..10 and print’ /etc/passwd.
perl -ne’1..20 and print’ /etc/passwd.

How do I get the first column in awk?

awk to print the first column. The first column of any file can be printed by using $1 variable in awk. But if the value of the first column contains multiple words then only the first word of the first column prints. By using a specific delimiter, the first column can be printed properly.

How do I print a specific line in awk?

awk : $>awk ‘{if(NR==LINE_NUMBER) print $0}’ file.txt.
sed : $>sed -n LINE_NUMBERp file.txt.
head : $>head -n LINE_NUMBER file.txt | tail -n + LINE_NUMBER Here LINE_NUMBER is, which line number you want to print. Examples: Print a line from single file. To print 4th line from the file then we will run following commands.

How do I see the third line of a file in Linux?

3 ways to get the Nth Line of a File in Linux

head / tail. Simply using the combination of the head and tail commands is probably the easiest approach.
sed. There are a couple of nice ways to do this with sed .
awk. awk has a built in variable NR that keeps track of file/stream row numbers.