"howdoi" is a python utility we can install via pip: sudo pip install howdoi

https://github.com/gleitz/howdoi

Exsample:

$> howdoi -n 5 grep bash
#  Answer from https://stackoverflow.com/questions/3052867/bash-script-using-grep-to-search-for-a-pattern-in-a-file ★
$pattern

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#  Answer from https://stackoverflow.com/questions/19819221/how-to-use-grep-in-a-shell-script-to-find-a-word-inside-of-a-file ★
grep -F "$word1" "$filename"

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#  Answer from https://stackoverflow.com/questions/12444808/how-do-i-fetch-lines-before-after-the-grep-result-in-bash ★
grep -i -B 10 'error' data

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#  Answer from https://stackoverflow.com/questions/19447352/using-grep-inside-shell-script-gives-file-not-found-error ★
#!/usr/bin/env bash

test=$(grep 'foo' "$1")
echo "$test"

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#  Answer from https://stackoverflow.com/questions/18147884/shell-variable-in-a-grep-regex ★
$ string="test this"
$ var="test"
$ echo $string | grep "^$var"