如何在Linux中的带有标题的制表符分隔文件中添加行名

Question

I am dealing with a table file with thousands line and header. But I have to add row name (row name represent row number) in each line. How could I do this in linux?

I can done this with excel, but there are too many files so I wish I could write down linux command to deal with it.

My file looks like this.

parameter1 parameter2 paramter3
1.2 1.3 1.4
2.1 2.1 1.5
1.5 1.6 2.1
....

And I would like to added row name as following:

sim parameter1 parameter2 paramter3
AM_1_arp 1.2 1.3 1.4
AM_2_arp 2.1 2.1 1.5
AM_3_arp 1.5 1.6 2.1
....

How could I done these with linux commands?

Answer 1

With awk:

 awk 'NR==1{print "sim "$0;next}{print "AM_"NR-1"_arp "$0}' yourfile

That says:

1. If this is the first line (header row) NR==1 then print "sim " plus the entire line: print "sim "$0;
2. Go to the next line skipping the rest of the program next
3. For any other line encountered print "AM " plus the line number NR plus "_arp " then the entire line $0 .

If you have many files in a directory for which you need to do this, you can reference them by wildcard and you can redirect the output inside of awk:

awk 'NR==1{print "sim "$0 > FILENAME"_out";next}{print "AM_"NR-1"_arp "$0 > FILENAME"_out"}' ./yourfile*

Answer 2

awk 'BEGIN {i=0} {print "AM_" i++ "_arp " $0}' <file> | sed 's/AM_0_arp/sim/g'

我只是将您选择的字符串添加到每行开头之间，并在其之间添加一个计数器，然后将第一个实例替换为sim作为标题。