how to grep so shows two linux code example

Example 1: bash print lines that match any of several words

# Basic syntax:
grep 'word1\|word2\|word3' /path/to/file
# This prints all lines that match word1, word2, OR, word3

Example 2: grep more than one word

Just use one of following forms with grep or egrep commands :)
grep "PATTERN1\|PATTERN2" FILE
grep -E "PATTERN1|PATTERN2" FILE
grep -e PATTERN1 -e PATTERN2 FILE
egrep "PATTERN1|PATTERN2" FILE

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