CODEWITHSUNDEEP
shell
user3796546
user3796546

Reputation: 11

searching for a variable value using shell script

I have a file containing the following data :

[abc]

p=xyz

q=123

r=nm

[stu]

p=hjk

q=1234

r=jk

I want to access the value of variable "p" which is inside the block"abc".

Can anybody help me in this? Thanks

Upvotes: 1

Views: 40

Answers (2)

fedorqui
fedorqui

Reputation: 289625

Let's start checking lines once [abc] is found and stop once another line starting with [ is found. In the meanwhile, check the first field being p and, in that case, print the second one:

$ awk -F= '$1=="[abc]" {f=1; next} f && $1=="p" {print $2} f && /^\[/ {f=0}' file
xyz

Upvotes: 1

Samarth
Samarth

Reputation: 687

You can try this:

awk 'BEGIN{RS="["} $1=="abc]"{ print $2 }' <filename> | cut -d'=' -f2

This will give the value of p, i.e. xyz.

Upvotes: 0

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