Nested Loops for text file


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# 1  
Nested Loops for text file

Hi

A text file containing data something like
Code:
Vehicle: BMW Class
checkin_note: 
Tyre   : Four
path_id   : 11
vault_file_size: -1

Vehicle: Toyota Class
checkin_note: 
Tyre   : Four
path_id   : 11
vault_file_size: -1

Vehicle: Chevrolet Class
checkin_note: 
Tyre   : Five
path_id   : 11
vault_file_size: -1

If Tyre = Four then Print Vehicle i.e. BMW/Chevrolet/Toyota

Last edited by rbatte1; 08-14-2019 at 08:16 AM..
# 2  
Can you post what you have tried?
# 3  
Code:
FilePath=("test_result.txt")
for Path in "${FilePath[@]}"
do
	for((j = i; j <= 5; j++));
	do
	Line=$(grep -n 'Tyre : Four' test_result.txt | cut -d : -f1)
	awk '{if (NR=='$Line'-2) print}' test_result.txt
	done
done

Moderator's Comments:
Mod Comment
Please wrap all code, files, input & output/errors in CODE tags for clarity.
It uses mono-space text and preserves white-space for indenting or fixed-width data.

Last edited by rbatte1; 08-14-2019 at 08:17 AM..
# 4  
Code:
$ awk -v Tyre='Four' ' $0 ~ /Vehicle:/ { veh=$0 } $0 ~ "Tyre : "Tyre { print veh } ' file
> Vehicle: BMW Class
Vehicle: Toyota Class

This User Gave Thanks to anbu23 For This Post:
# 5  
Hi Anbu
what if output data is needed in form mentioned below
Current
>
Code:
Vehicle: BMW Class
Vehicle: Toyota Class

Required:

Code:
BMW
Toyota


Last edited by rbatte1; 08-14-2019 at 08:18 AM..
# 6  
If you don't have ">" in your input before vehicle then try
Code:
awk -v Tyre='Four' ' $0 ~ /Vehicle:/ { veh=$2 } $0 ~ "Tyre : "Tyre { print veh } ' file

Or

Code:
$ awk -v Tyre='Four' ' $0 ~ /Vehicle:/ { sub(">","");veh=$2 } $0 ~ "Tyre : "Tyre { print veh } ' file
BMW
Toyota

# 7  
Using awk's built-in ability to split records on blank lines, there's no need for a nested loop:
Code:
$ awk '$3 ~ /Four/ {print $1}' RS="" FS="\n" datafile

Vehicle: BMW Class
Vehicle: Toyota Class

$


Last edited by Corona688; 08-14-2019 at 03:24 PM..
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