Question

find . -type f | xargs file | grep text | cut -d':' -f1 | xargs grep -l "TEXTSEARCH" {}

it’s a good solution? for find TEXTSEARCH recursively in only textual files

Answer 1

You can use the -r(recursive) and -I(ignore binary) options in grep:

$ grep -rI "TEXTSEARCH" .

• -I Process a binary file as if it did not contain matching data; this is equivalent to the --binary-files=without-match option.
• -r Read all files under each directory, recursively; this is equivalent to the -d recurse option.