The shadow-utils package includes the necessary programs for converting UNIX password files to the shadow password format, plus programs for managing user and group accounts. The pwconv command converts passwords to the shadow password format. The pwunconv command unconverts shadow passwords and generates a passwd file (a standard UNIX password file). The pwck command checks the integrity of password and shadow files. The lastlog command prints out the last login times for all users. The useradd, userdel, and usermod commands are used for managing user accounts. The groupadd, groupdel, and groupmod commands are used for managing group accounts.

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The main development branch is at https://github.com/shadow-maint/shadow.git

See STABLE.md for a list of supported stable branches.

There are several ways to contact us:

• the general discussion mailing list
• the #shadow IRC channel on libera.chat:
  • irc://irc.libera.chat/shadow

• the general discussion mailing list archive
• the commit mailing list archive, only used for historical purposes

Contributions are welcome. Follow the guidelines before posting any patches.

Authors and maintainers are listed in AUTHORS.md.