awk, how to pass in a list of files based on a condition? - awk

Question

I was wondering if there is any way to pass in a file list to awk. The file list has thousands of files and I am using a grep -l to find a subset of files I am interested in passing to awk
E.g.,
grep -l id file-*.csv
file-1.csv
file-2.csv
$ cat file-1.csv
id,col_1,col_2
1,abc,100
2,def,200
$ cat file-2.csv
id,col_1,col_2
3,xyz,1000
4,hij,2000
If I do
$ awk -F, '{print $2,$3}' file-1.csv file-2.csv | grep -v col
abc 100
def 200
xyz 1000
hij 2000
it works how I would want but seeing as there are too many files to manually do like this
file-1.csv file-2.csv
I was wondering if there is a way to pass in the result of the...
grep -l id file-*.csv
Edit:
grep -l id
is the condition. Each file has a header but only some have 'id' in the header so I can't use the file-*.csv wildcard in the awk statement.
If I did an ls on file-*.csv I would end up with more the file-1.csv and file-2.csv.
e.g.,
$ cat file-3.csv
name,col,num
a1,hij,3000
b2,lmn,50000
$ ls -l file-*.csv
-rw-r--r-- 1 tp staff 35 20 Sep 18:50 file-1.csv
-rw-r--r-- 1 tp staff 37 20 Sep 18:51 file-2.csv
-rw-r--r-- 1 tp staff 38 20 Sep 18:52 file-3.csv
$ grep -l id file-*.csv
file-1.csv
file-2.csv

Answer 1

Based on the output you show under "If I do", it sounds like this might be what you're trying to do:
awk -F, 'FNR>1{print $2,$3}' file-*.csv
but your question isn't clear so it's a guess.
Given your updated question all you need with GNU awk for nextfile is:
awk -F, 'FNR==1{if ($1 != "id") nextfile} {print $2,$3}' file-*.csv
and with any awk (but less efficiently than with GNU awk):
awk -F, 'FNR==1{f=($1=="id"?1:0); next} f{print $2,$3}' file-*.csv

Answer 2

awk -F, 'NR > 1{print $2,$3}' $(grep -l id file-*.csv)
(This will not work if any of your filenames contain whitespace.)

Answer 3

To find the files with id field, merge/output their contents excluding the lines with field id:
grep trick:
grep --no-group-separator -hA 1000000 'id' file-*.csv | grep -v 'id'
-h - suppress the prefixing the file names on output
-A num - print num lines of trailing context after matching line(s). 1000000 - considered as maximal number of line which, presumably, will not be exceeded(you may adjust it in case if you really have files with more than 1000000 lines)
The output (for 2 sample files from the question):
1,abc,100
2,def,200
3,xyz,1000
4,hij,2000