How to read a file AND make a query at each line? - awk

Question

I have a file .csv and would like to add information to it. The delimiter is ; .
I had an idea to do so but it didn't really work. It was :
cat file.csv | awk -F ";" '{ print ""$1" "$2" "$3 }' > temp.csv
cat temp.csv | while read info1 info2 info3
do
read -p 'Give another information : " INFO
echo "$info1 ; $info2 ; $info3 ; INFO" >> new_file.csv
done
Everything works except "read -p" within the "while"...
I was wondering if I should try only using an awk command but I actually don't really master this command so....Maybe someone has an idea to help me with that problem.

Answer 1

awk '
BEGIN{FS=OFS=";"}
{printf "Enter new stuff for line : " $0 "\n";
getline newstuff < "-";
print $0,newstuff > "newfile" }' file
Test:
$ cat file
this;is;my;line;one
this;is;my;line;two
this;is;my;line;three
$ awk 'BEGIN{FS=OFS=";"}{printf "Enter new stuff for line : " $0 "\n"; getline newstuff < "-"; print $0,newstuff > "newfile" }' file
Enter new stuff for line : this;is;my;line;one
hola
Enter new stuff for line : this;is;my;line;two
hello
Enter new stuff for line : this;is;my;line;three
bonjour
$ cat newfile
this;is;my;line;one;hola
this;is;my;line;two;hello
this;is;my;line;three;bonjour

Answer 2

Entirely within awk:
awk 'BEGIN{FS=OFS=";"}{printf "prompt? ";getline info <"/dev/tty";print $1,$2,$3,info > "output"}'

Answer 3

Do not try to do this all in awk, as an solution like that would be error prone and/or unnecessarily complicated.
Try this bash script:
> new_file
exec 3<file
while IFS=';' read -r f1 f2 f3 rest
do
read -p "other info? " info <&1
echo "$f1;$f2;$f3;$info" >> new_file
done <&3
e.g.:
$ > new_file
exec 3<file
while IFS=';' read -r f1 f2 f3 rest
do
read -p "other info? " info <&1
echo "$f1;$f2;$f3;$info" >> new_file
done <&3
other info? line 1
other info? line 2
other info? line 3
$ cat file
1;2;3;4
5;6;7;8
9;10;11;1
$ cat new_file
1;2;3;line 1
5;6;7;line 2
9;10;11;line 3