Search string in multiple files

$ find -E ./ -iregex '.*\.(cpp|h)$' | xargs grep -Ei 'string'

Replace string in multiple files

$ find -E ./ -iregex '.*menu_.*\.(cpp|h)$' | xargs sed -E -i~ 's/ORG/NEW/g'

Multiple file name change

$ find -E ./ -iregex '.*menu_.*\.(cpp|h)$' > file.list

$ perl -w rename.pl file.list

rename.pl

-----------------------------------------

while($line = <>) {

if($line =~ m/.*(\bMenu_Setting.*)/i) {

# print "$1\n";

$old = $line;

$old =~ s/^\./\/home\/max\/src\/csu502 can\/acu-stm32-lcd/;

$old =~ s/\n//;

print "$old\n";

$newname = $old;

# replace file name

$newname =~ s/Menu_Setting_//;

print "$newname\n\n";

# use shell command: mv

system("mv", "$old", "$newname");

}

}