8f134c0bea
C89 defined isdigit as a function that tests for any decimal-digit character, defining the decimal digits as 0 1 2 3 4 5 6 7 8 9. I don't own a copy of C89 to check, but check in C17: 7.4.1.5 5.2.1 More specifically: > In both the source and execution basic character sets, the value > of each character after 0 in the above list of decimal digits > shall be one greater than the value of the previous. And since in ascii(7), the character after '9' is ':', it's highly unlikely that any implementation will ever accept any _decimal digit_ other than 0..9. POSIX simply defers to the ISO C standard. This is exactly what we wanted from ISDIGIT(c), so just use it. Non-standard implementations might have been slower or considered other characters as digits in the past, but let's assume implementations available today conform to ISO C89. Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
shadow-utils
Introduction
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.
Sites
Contacts
There are several ways to contact us:
- the general discussion mailing list
- the #shadow IRC channel on libera.chat:
- irc://irc.libera.chat/shadow
Mailing archives
- the general discussion mailing list archive
- the commit mailing list archive, only used for historical purposes
Authors and maintainers
Authors and maintainers are listed in AUTHORS.md.