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Need awk or Shell script to compare Column-1 of two different CSV files and print if column-1 matche

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Top Forums Shell Programming and Scripting Need awk or Shell script to compare Column-1 of two different CSV files and print if column-1 matche
# 1  
Old 12-26-2018
script to compare Column-1 of two different CSV files and print differences
Example:
I have files in below format
file 1:
Code:
zxc,133,joe@example.com
cst,222,xyz@example1.com

File 2 Contains:
Code:
hxd
hcd
jws
zxc
cst

File 1 has 50000 lines and file 2 has around 30000 lines :

Expected Output has to be :

Code:
hxd
hcd
jws

Tried the below Code.Doesnt work

Code:
awk 'BEGIN {
 IGNORECASE = 1;
 FS =OFS = ","
  }
  NR == FNR {
  f[$1] ! = $0
  next
  }
$1 in f {
  print $1 > "finaloutput.csv";
  }' file1.csv  file2.csv

Moderator's Comments:
Mod Comment Please do not change the content of your original post (other than cosmetic changes). It makes the thread really hard to follow otherwise
Last edited by Scrutinizer; 12-26-2018 at 11:39 AM.. Reason: code tags
# 2  
Old 12-26-2018
Code:
awk 'BEGIN {
 IGNORECASE = 1;
 FS="."
  }
  NR == FNR {
  f[$1]
  next
  }
$1 in f {
  print $1, $0
  }' file2.csv  file1.csv

Last edited by vgersh99; 12-26-2018 at 10:00 AM..
This User Gave Thanks to vgersh99 For This Post:
TestPractice
# 3  
Old 12-26-2018
With the renewed content of post #1 (please in future create a new post instead) try:
Code:
awk 'NR==FNR{A[$1]; next} !($1 in A)' IGNORECASE=1 FS=, file1 FS=" " file2

# 4  
Old 12-26-2018
If you don't insist on awk, try

Code:
$ sort -t, file[12] | uniq -uw3
hcd
hxd
jws

# 5  
Old 01-10-2019
Using bash and GNU grep.

Code:
grep -v -Ff <(cut -d',' -f 1 testfile1.csv) testfile2.csv > resultfile.csv

Moderator's Comments:
Mod Comment edit by bakunin: please put CODE-tags around code, data and terminl output to have it stand out form the text. Thank you.
Last edited by ulaxmi; 01-10-2019 at 10:33 AM..
# 6  
Old 01-10-2019
Hello TestPractice,

You have NOT haven't phrased your problems clearly in your post, based on your output shown I come up with this.
As per your shown samples I have not used ignorecase here.
Code:
awk 'FNR==NR{a[$1];next} !($0 in a)' FS="," Input_file1 FS=" " Input_file2

Thanks,
R. Singh
Last edited by RavinderSingh13; 01-10-2019 at 12:12 PM..
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