chpasswd (8)         - update passwords in batch mode
fgetpwent_r (3)      - get passwd file entry reentrantly
getpwent_r (3)       - get passwd file entry reentrantly
gpasswd (1)          - administer /etc/group and /etc/gshadow
htpasswd (1)         - Manage user files for basic authentication
lpasswd (1)          - Change group or user password
lppasswd (1)         - add, change, or delete digest passwords.
pam_localuser (8)    - require users to be listed in /etc/passwd
pam_passwdqc (8)     - Password quality-control PAM module
passwd (1)           - update user's authentication tokens
sslpasswd (1ssl)     - compute password hashes
passwd (5)           - password file
passwd2des (3)       - RFS password encryption
RSA_SecurID_getpasswd (1) - get the one-use password from a RSA sid-800 token
saslpasswd2 (8)      - set a user's sasl password
smbpasswd (5)        - The Samba encrypted password file
smbpasswd (8)        - change a user's SMB password
userpasswd (1)       - A graphical tool to allow users to change their passwo...
yppasswd (1)         - change your password in the NIS database