regex : search for files with no specific keyword

[sevy]

Hello,

I'm looking for a way to find pdf files which are NOT containing a keyword.
I tried
exiftool -r -progress -if "$subject=~/(?!MYKEYWORD)/" -FileName -subject .
exiftool -r -progress -if "$subject=~/(?s)^((?!MYKEYWORD).)*$/" -FileName -subject .
exiftool -r -progress -if "$subject=~/^((?!MYKEYWORD).)*$/" -FileName -subject .

but it does not works :-(

does a RegEx Guru have an idea ??

thanks in advance !

[Hayo Baan]

To not match you should be able to use !~ instead of =~. Have you already tried that?

[sevy]

Hi,

wonderful, it works with :
exiftool -r -progress -if "$subject!~/MYKEYWORD/" -FileName -subject .

thanks a lot !
hartelijk bedankt

[StarGeek]

There's also plain old not
exiftool -r -progress -if "not $subject=~/MYKEYWORD/" -FileName -subject .