Local system users encrypted passwords and related information. Please note, that you usually need superuser rights to access /etc/shadow.
|hash_alg||TEXT||Password hashing algorithm|
|last_change||BIGINT||Date of last password change (starting from UNIX epoch date)|
|min||BIGINT||Minimal number of days between password changes|
|max||BIGINT||Maximum number of days between password changes|
|warning||BIGINT||Number of days before password expires to warn user about it|
|inactive||BIGINT||Number of days after password expires until account is blocked|
|expire||BIGINT||Number of days since UNIX epoch date until account is disabled|
select * from shadow where username = 'root'