Checks are made to verify that each entry has:

*

the correct number of fields

*

a unique user name

*

a valid user and group identifier

*

a valid primary group

*

a valid home directory

*

a valid login shell

The checks for correct number of fields and unique user name are fatal. If the entry has the wrong number of fields, the user will be prompted to delete the entire line. If the user does not answer affirmatively, all further checks are bypassed. An entry with a duplicated user name is prompted for deletion, but the remaining checks will still be made. All other errors are warning and the user is encouraged to run the usermod command to correct the error.

The commands which operate on the /etc/passwd file are not able to alter corrupted or duplicated entries. pwck should be used in those circumstances to remove the offending entry.  

OPTIONS

The options which apply to the pwck command are:

-q

Report errors only. The warnings which do not require any action from the user won't be displayed.

-r

Execute the pwck command in read-only mode.

-s

Sort entries in /etc/passwd and /etc/shadow by UID.

By default, pwck operates on the files /etc/passwd and /etc/shadow. The user may select alternate files with the passwd and shadow parameters.  

FILES

/etc/group

Group account information.

/etc/passwd

User account information.

/etc/shadow

Secure user account information.

SEE ALSO

group(5), passwd(5), shadow(5), usermod(8).  

EXIT VALUES

The pwck command exits with the following values:

0

success

1

invalid command syntax

2

one or more bad password entries

3

can't open password files

4

can't lock password files

5

can't update password files

Index

NAME

SYNOPSIS

DESCRIPTION

OPTIONS

FILES

SEE ALSO

EXIT VALUES

Партнёры:

Хостинг: