je me permet de rappeler l'existence de apropos. c'est vrai que man c'est bien mais faut savoir lequel lire
[fixed]-=[jorge@blackknight]=(~)> apropos password
chage (1) - change user password expiry information
chpasswd (8) - update password file in batch
dpasswd (8) - change dialup password
expiry (1) - check and enforce password expiration policy
grpconv (8) - convert to and from shadow passwords and groups.
grpunconv (8) - convert to and from shadow passwords and groups.
login.defs (5) - shadow password suite configuration
passwd (1) - change user password
passwd (5) - The password file
pwck (8) - verify integrity of password files
pwconv (8) - convert to and from shadow passwords and groups.
pwunconv (8) - convert to and from shadow passwords and groups.
shadow (5) - encrypted password file
shadowconfig (8) - toggle shadow passwords on and off
unix_chkpwd (8) - check the password of the invoking user
vigr (8) - edit the password, group, shadow-password, or shadow-group file.
vipw (8) - edit the password, group, shadow-password, or shadow-group file.
[/fixed]
et avec un peu de filtrage
[fixed]
-=[jorge@blackknight]=(~)> apropos password |grep change
chage (1) - change user password expiry information
dpasswd (8) - change dialup password
passwd (1) - change user password
[/fixed]