Многообразный Find word inside special characters or spaces in поля

Question 1

How to find all matches of exact word in поля inside directory (including subdirectories) which май be surrounded by special characters or spaces or nothing (beginning or end of line). I think this is common when searching in source code.

Многообразный Let's say inside the поля I want to find word is. It should find these occurences:

is (this is the only word in в line)

(is)

"is"

this is something

For example grep -r in does find matches inside other words which I don't need.

Question 2

Можно использовать -w или --word-regexp флаг, например,

grep -wr 'is' .

От man grep

-w, --word-regexp
       Select  only  those  lines  containing  matches  that form whole
       words.  The test is that the matching substring must  either  be
       at  the  beginning  of  the  line,  or  preceded  by  a non-word
       constituent character.  Similarly, it must be either at the  end
       of  the  line  or  followed by a non-word constituent character.
       Word-constituent  characters  are  letters,  digits,   and   the
       underscore.

steeldriver · Accepted Answer · 7 December 2019 в 13:49

Можно использовать -w или --word-regexp флаг, например,

grep -wr 'is' .

От man grep

-w, --word-regexp
       Select  only  those  lines  containing  matches  that form whole
       words.  The test is that the matching substring must  either  be
       at  the  beginning  of  the  line,  or  preceded  by  a non-word
       constituent character.  Similarly, it must be either at the  end
       of  the  line  or  followed by a non-word constituent character.
       Word-constituent  characters  are  letters,  digits,   and   the
       underscore.

Многообразный Find word inside special characters or spaces in поля

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