This file is indexed.

/usr/share/pam-configs/pwquality is in libpam-pwquality 1.3.0-0ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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Name: Pwquality password strength checking
Default: yes
Priority: 1024
Conflicts: cracklib
Password-Type: Primary
Password:
	requisite			pam_pwquality.so retry=3
Password-Initial:
	requisite			pam_pwquality.so retry=3