Vlookup on 2 files - inserting vlookup command on another command


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# 1  
Vlookup on 2 files - inserting vlookup command on another command

Hello, i am trying to print group name column(etc/group) on script (etc/passwd) since group name is not listed on etc/passwd columns. Im trying to do a vlookup. but i cant figure out how i can insert the vlookup command FNR==NR inside the print out command or the output. I also tried exporting etc/group and etc/passwd on a file but still cant find a way on how to do it.

Code:
awk -F":" -v TNR=$(wc -l < passwd.sh) '
BEGIN { NUM_PAGES=TNR/10+1
        print "--------------------------------------------------"
        printf "%-20s %-10s %-3s\n","USERNAME","GUID","DIRECTORY"
        print "--------------------------------------------------" }

!(NR%10) { PAGE++
           printf "--- Page %d of %d ---",PAGE,NUM_PAGES
           getline rc < "-"; system("tput cuu1") }

 #(NR==FNR) {a[$4];next}$3 in a{print $3}
 { printf "%-20s %-10s %-30s\n", $1,$3, $7 } ' group.sh  passwd.sh


Last edited by Scrutinizer; 06-01-2019 at 04:32 AM.. Reason: code tags
# 2  
Do you mean something like this?

Code:
awk -F: '
  NR==FNR {
    A[$3]=$1
    next
  }

  $4 in A {
    $4=A[$4]
  }

  {
    printf "%-20s %-10s %-30s\n", $1,$4,$7 
  }
' /etc/group /etc/passwd

These 2 Users Gave Thanks to Scrutinizer For This Post:
# 3  
absolutely yes! thank you so much!
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