awk, multiple files input and multiple files output

Shell Programming and Scripting
1

Hi!
I'm new in awk and I need some help.
I have a folder with a lot of files and I need that awk do something in each file and print a new file with the output. The input file name should be modified when I print the outpu files.

Thanks in advance for help!
:slight_smile:
ciao

2

what is this 'something' you need awk to do?

In what way must the input file be modified?

What does this input and output look like?

We need details.

3

the 'something' is the elimination of duplicates considering only the first column (i try '!_[$1]++' and works good for me).
I want to eliminate the duplicates (as written above) from each input file in the folder and I want an ouput file (one for each input file) that should have the same name of the input file with added something. For example: input file name is "333.e" and I would like an output file name like "333_mod.e".
The input files have two columns and I need to eliminate duplicates agreeing with the elements of the first column.
They are like:

pb_04 0,1
pb_05 0.3
pb_05 0.2
pb_12 0.85
... ...

in this case i need to eliminate one row with pb_05.

thanks!

4

How about this ?

awk '!a[$1]{a[$1]++;print $0 > FILENAME"_mod"}' File.txt
5

Thank you Pravin!! it works perfectly!!
MAy be you know also how can I apply it for a list of files in a folder?
All the files have some equal words in the name and their name look like 3254_blabla.e

6

Don't forget to close the files in awk, or it will break if there are many output files..