$ echo $PATH
/home/bob/perl5/bin:/home/bob/2.scripts/pages/9.cw/template_stuff/crosswords/sscce:/home/bob/bin:/home/bob/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
$ pwd
/home/bob
$ ./5.sscce.pl
bash: ./5.sscce.pl: No such file or directory
$