How to insert a generated value by a loop while you open a file in bash - bash

Question

Lets say that I have:
cat FILENAME1.txt
Definition john
cat FILENAME2.txt
Definition mary
cat FILENAME3.txt
Definition gary
cat textfile.edited
text
text
text
I want to obtain an ouput like:
1 john text
2 mary text
3 gary text
I tried to use "stored" values from FILENAMES "generated" by a loop. I wrote this:
for file in $(ls *.txt); do
name=$(cat $file| grep -i Definition|awk '{$1="";print $0}')
#echo $name --> this command works as it gives the names
done
cat textfile.edited| awk '{printf "%s\t%s\n",NR,$0}'
which very close to what I want to get
1 text
2 text
3 text
My issue was coming through when I tried to add the "stored" value. I tried the following with no success.
cat textfile.edited| awk '{printf "%s\t%s\n",$name,NR,$0}'
cat textfile.edited| awk '{printf "%s\t%s\n",name,NR,$0}'
cat textfile.edited| awk -v name=$name '{printf "%s\t%s\n",NR,$0}'
Sorry if the terminology used is not the best, but I started scripting recently.
Thank you in advance!!!

Answer 1

One solution using paste and awk ...
We'll append a count to the lines in textfile.edited (so we can see which lines are matched by paste):
$ cat textfile.edited
text1
text2
text3
First we'll look at the paste component:
$ paste <(egrep -hi Definition FILENAME*.txt) textfile.edited
Definition john text1
Definition mary text2
Definition gary text3
From here awk can do the final slicing-n-dicing-n-numbering:
$ paste <(egrep -hi Definition FILENAME*.txt) textfile.edited | awk 'BEGIN {OFS="\t"} {print NR,$2,$3}'
1 john text1
2 mary text2
3 gary text3
NOTE: It's not clear (to me) if the requirement is for a space or tab between the 2nd and 3rd columns; above solution assumes a tab, while using a space would be doable via a (awk) printf call.

Answer 2

You can do all with one awk command.
First file is the textfile.edited, other files are mentioned last.
awk 'NR==FNR {text[NR]=$0;next}
/^Definition/ {namenr++; names[namenr]=$2}
END { for (i=1;i<=namenr;i++) printf("%s %s %s\n", i, names[i], text[i]);}
' textfile.edited FILENAME*.txt
You can avoid awk with
paste -d' ' <(seq $(wc -l <textfile.edited)) \
<(sed -n 's/^Definition //p' FILE*) \
textfile.edited

Answer 3

Another version of the paste solution with a slightly careless grep -
$: paste -d\ <( grep -ho '[^ ]*$' FILENAME?.txt ) textfile.edited
john text
mary text
gary text
Or, one more way to look at it...
$: a=( $(sed '/^Definition /s/.* //;' FILENAME[123].txt) )
$: echo "${a[#]}"
john mary gary
$: b=( $(<textfile.edited) )
$: echo "${b[#]}"
text text text
$: c=-1 # initialize so that the first pre-increment returns 0
$: while [[ -n "${a[++c]}" ]]; do echo "${a[c]} ${b[c]}"; done
john text
mary text
gary text
This will put all the values in memory before printing anything, so if the lists are really large it might not be your best bet. If they are fairly small, it's pretty efficient, and a single parallel index will keep them in order.
If the lines are not the same as the number of files, what did you want to do? As long as there aren't more files than lines, and any extra lines are ok to ignore, this still works. If there are more files than lines, then we need to know how you'd prefer to handle that.

Answer 4

A one-liner using GNU utilities:
paste -d ' ' <(cat -n FILENAME*.txt | sed 's/\sDefinition//') textfile.edited
Or,
paste -d ' ' <(cat -n FILENAME*.txt | sed 's/^\s*//;s/\sDefinition//') textfile.edited
if the leading white spaces are not desired.
Alternatively:
paste -d ' ' <(sed 's/^Definition\s//' FILENAME*.txt | cat -n) textfile.edited