Shell Programming and Scripting

I want to search texts between first occurence of the matching pattern and replace it with some other text.pls advice what can be done. I searched alot, i could not find anything relevant.
Ex my input is as follows:

Code:

red
yellow
grey
white
blue
red
pink
violet
white

I want to search text "while" between the first occurrence of the two pattern match "red" and "blue" and wnat to replace it with black. I do not want to replace it in second occurrence of matching pattern. Expected output is as follows:

Code:

red
yellow
grey
black
blue
red
pink
violet
white

Pls suggets how owuld i write one liner sed command.

Code:

sed 0,/white/{s/white/black/} filename

No,

This is not working, rather i knew this before.
You have not mentioned range for the pattern. I just gave sample input file, In reality "white" word can present multiple places in file. I wanna search white in first occurence of two matching pattern precisely (red and blue).

If awk is fine then try

Code:

$ awk '!f && /red/,/blue/{f=1; sub(/white/,"black")}1' file

Hi Akshay,

Command worked but can I exclude lines containing red and blue while getting result.
Now I could replace lines between those two search patten but it also replaces the texts which are present on those two search patterns.
Pls tell me script which will exclude lines containing words, red and blue.

I don't know how your original file looks, try this

Code:

$ awk '!f && /red/,/blue/{if(/red|blue/){if(/blue/){f=1}next}sub(/white/,"black")}1' file

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