I'm trying to run a command to remove require_once from php files from here (code below), but I am getting the error:sed: can't read -: No such file or directoryI am in the correct folder; what's the problem?find . -name '*.php' -not -wholename '*/Loader/Autoloader.php' \  -not -wholename '*/Application.php' -print0 | \  xargs -0 sed --regexp-extended --in-place 's/(require_once)/\/\/ \1/g'Update:If I run:find . -name '*.php' -not -wholename '*/Loader/Autoloader.php' \  -not -wholename '*/Application.php' -print0I get:find: invalid predicate `-wholename'I tried this and it returned a list of all the files:find . -name '*.php' -not -name '*/Loader/Autoloader.php' \  -not -name '*/Application.php' -print0But then changing the original to reflect this:find . -name '*.php' -not -name '*/Loader/Autoloader.php' \  -not -name '*/Application.php' -print0 | \ xargs -0 sed --regexp-extended --in-place 's/(require_once)/\/\/ \1/g'Gives the error:-bash:  xargs: command not foundFYI, I'm running sed version 4.1.2 and I'm a bit a lost in the command line already, so please explain answers
Debian sed: can't read
bash;debian;sed