Как grep несколько строк на нескольких файлах?

это работает в моем grep, он должен работать на любой платформе. То, что вы хотите сделать, это прочитать шаблоны из файла. Вот пример (обратите внимание на ' - f -', т. е. читать шаблоны из стандартного ввода (-):

$ man grep > grep.txt
$ man cat > cat.txt

$ cat > patterns
terminfo
full
should

(нажмите Ctrl+D здесь)

$ cat patterns | grep -f- *.test 
cat.test:       The  full  documentation for cat is maintained as a Texinfo manual.  If
cat.test:       should give you access to the complete manual.
grep.test:              This  version  number should be included in all bug reports (see
grep.test:              should avoid both -q and -s and  should  redirect  standard  and
grep.test:       implementations support \{ instead, so portable scripts should avoid  {
grep.test:       in grep -E patterns and should use [{] to match a literal {.
grep.test:       portable scripts should avoid it.
grep.test:                     terminfo capability  does  not  apply,  when  the  chosen
grep.test:              file name wildcard expansion and therefore should not be treated
grep.test:       pcrepattern(3), terminfo(5), glob(7), regex(7).
grep.test:       The full documentation for grep is maintained as a TeXinfo manual.   If
grep.test:       should give you access to the complete manual.