awk print to last column

1. How do I print the last column in awk?
2. How do you print the last second column in awk?
3. How do I print the last column in Linux?
4. How do you get the last element in awk?
5. How do I print last line of awk?
6. How do I print multiple columns in awk?
7. How do you sum in awk?
8. How do I use awk with delimiter?
9. How do I print the last second line in Unix?
10. How do you cut the last column in awk in Unix?
11. What is NR in awk command?
12. How do you display the last column in Unix?

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 you print the last second 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.

How do I print the last column in Linux?

Example 2: Print the last column of a command output

The following `awk` command will print the last column from the output of the 'ls -l' command.

How do you get the last element in awk?

as NF refers to the number of fields of the current record, printing $NF means printing the last one. Another option is to use bash parameter substitution.

How do I print last line of awk?

awk file example, line, file, Pure bash: $ while read line; do [ -z "$line" ] && continue ;echo $line##* ; done < file example. line.

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 you sum in awk?

2 Answers. The -F',' tells awk that the field separator for the input is a comma. The sum+=$4; adds the value of the 4th column to a running total. The ENDprint sum; tells awk to print the contents of sum after all lines are read.

How do I use awk with delimiter?

Processing the delimited files using awk. Where, -F: – Use : as fs (delimiter) for the input field separator. print $1 – Print first field, if you want print second field use $2 and so on.

How do I print the last second line in Unix?

4 Answers. Use echo -e for backslash interpretation and to translate \n to newlines and print the interested line number using NR . With multiple lines and do, tail and head can be used to print any particular line number.

How do you cut the last column in awk in Unix?

The second part (either NF-=1 NF-- or --NF ) is just subtracting one from the NF variable. This prevent the last field from being printed, because when you change a field (removing the last field in this case), awk re-construct $0 , concatenate all fields separated by space by default.

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.

How do you display the last column in Unix?

Performance

1. using awk : $ time awk 'print $NF' datafile > /dev/null real 0m12.124s user 0m10.704s sys 0m0.709s.
2. using grep : $ time grep -o '\S\+$' datafile > /dev/null real 0m36.731s user 0m36.244s sys 0m0.401s $ time grep -o '\S*$' datafile > /dev/null real 0m40.865s user 0m39.756s sys 0m0.415s.