UNIX for Advanced & Expert Users

find . -name "*" -exec awk -v w1=WORD1 -v w2=WORD2 '
BEGIN {W1=0;W2=0} {
if($0 ~ w1) {
W1=1
}
if($0 ~ w2) { 
W2=1
}
} END {
if(W1+W2>1) {
print FILENAME
}
}
' {} \; 2>/dev/null

for fname in $(find . -type f ) 
do
     grep -Fq WORD1 "$fname" && grep -Fq WORD2 "$fname" && echo "$fname"
done

grep -R -Pzl 'WORD1(.*\n)*.*WORD2|WORD2(.*\n)*.*WORD1' .

find . | xargs grep -l "WORD1" | xargs grep -l "WORD2"

rapgrep Require all patterns grep. (what)
Path    : ~/bin/rapgrep
Version : 1.2
Length  : 307 lines
Type    : Perl script, ASCII text executable
Shebang : #!/usr/bin/perl
Help    : probably available with [     ]-h
Modules : (for perl codes)
 warnings       1.23
 strict 1.08
 English        1.09
 Carp   1.3301
 Data::Dumper   2.151_01
 Getopt::Long   2.42

Script rapgrep reads files and matches patterns as provided by the
caller.  If all patterns successfully match at least once, then
the file name is printed.  Some details of the matching results
may be requested to be printed.

usage: rapgrep [options] -- [files]

options:
--all
  Force all lines to be searched.  The default is to quit if
  all matches are successful even if EOF is not read yet.

-e=pattern
 Use perl pattern for searching.  More than one -e=p may be used.
 However, if the control statement becomes unwieldy, see -f.

--file=pathname
  Read file at pathname for patterns, one per line.  More than
  one --filename=path may used.  All -e and -f contents are
  collected and used.  A "#" may be used for comment lines in the
  files.

--ignore
  Ignore case in matches.  Default is case is significant.

--reverse
  Invert the sense of success: if a filename normally would 
  not be printed, then print it; if normally printed, omit it.

--list=rx
  List the reasons why a filename is not printed ("r").  List the
  details of the pattern matches: how many of which pattern in
  what file.

--comment=string
  Change the comment character in the pattern files to any in the
  string.

--h (or -h)
  print this message and quit.

--version
  print this message and quit.

Times:                  real    0m45.672s : user    0m28.487s : sys     0m15.590s
Jim's loop took         real    0m20.383s : user    0m8.548s  : sys     0m10.992s
Robin's was faster      real    0m4.126s  : user    0m2.883s  : sys     0m0.303s

time find . 2>/dev/null | xargs grep -l "$chn1" 2>/dev/null | xargs grep -l "$chn2" 2>/dev/null

time find . -exec grep -l "$chn1" {} \; 2>/dev/null | xargs grep -l "$chn2" 2>/dev/null