How do you reverse the order of lines in a file?

How do you reverse the order of lines in a file?

3. nl/sort/cut Commands

1. 3.1. nl. To be able to order the file in reverse order, we need an index for each row.
2. 3.2. sort. Now we want to sort these indexed lines into reverse order, for which we should use sort:
3. 3.3. cut.

How do I print in reverse order?

Microsoft Word has a single command that forces the printer to reverse print every print job:

1. Open Word, then click Options > Advanced.
2. Scroll through and come to the Print section on the right.
3. When you want to reverse print a page, select the Print Pages in Reverse Order check box.

How do you 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.

Why does my printer print pages in reverse order?

In fact, some printers actually output documents in reverse order because of the way they stack the pages in the output tray, so turning off the “reverse pages” setting yields backward documents. If your document pages emerge with the last on top, check your printing settings for an option that inverts page order.

How do I reverse a string in Unix?

Say hello to rev command

1. echo “nixcraft” | rev.
2. rev<<<“This is a test”
3. perl -ne ‘chomp;print scalar reverse . “\
4. echo ‘nixcraft’ | perl -ne ‘chomp;print scalar reverse . “\
5. #!/bin/bash input=”$1″ reverse=”” len=${#input} for (( i=$len-1; i>=0; i– )) do reverse=”$reverse${input:$i:1}” done echo “$reverse”

How do I make an awk file?

Use either ‘ awk ‘ program ‘ files ‘ or ‘ awk -f program-file files ‘ to run awk . You may use the special ‘ #! ‘ header line to create awk programs that are directly executable. Comments in awk programs start with ‘ # ‘ and continue to the end of the same line.

How do you print a new line in awk?

Original answer: Append printf “\n” at the end of each awk action {} . printf “\n” will print a newline.