Linux script to extract value from text file


I have text files that contain something like:
<word1> <word2> <word3> <word4> ..... ID: <VALUE> <word20> <word21> <word22> ...

and I need a command/bash script that reads the file, gets the value after the "ID:" word and save it in a variable. The number of words and their value is different in each file. However, in all files the value I want to get is next to the ID: word (separated with space).

Anyone can help?

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variable=`grep ID: file`
variable=${variable#*ID: }
variable=${variable%% *}
echo $variable
Gerwin Jansen, EE MVETopic Advisor Commented:
variable=$(awk 'BEGIN {FS="ID: "} {print $2}' the_text_file | cut -d" " -f1)
echo ${variable}

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