find and replace from command line unix

unix replace

sed -i -e 's/Game #[0-9]*/&1/' file

-i is for in-place editing, and & means whatever matched from the pattern. If you don't want to overwrite the file, omit the -i flag.

unix replace

Using sed:

cat file | sed -e 's/\(Game #[0-9]*\)/\11/'

unix replace

sed 's/ Game #\([0-9]*\):/ Game #1\1:/' yourfile.txt

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