DOKK / manpages / debian 12 / adduser / deluser.conf.5.en
DELUSER.CONF(5) File Formats Manual DELUSER.CONF(5)

/etc/deluser.conf - configuration file for deluser(8) and delgroup(8).

The file /etc/deluser.conf contains defaults for the programs deluser(8) and delgroup(8). Each line holds a single value pair in the form option = value. Double or single quotes are allowed around the value, as is whitespace around the equals sign. Comment lines must have a hash sign (#) in the first column.

deluser(8) and delgroup(8) also read /etc/adduser.conf, see adduser.conf(5); settings in deluser.conf may overwrite settings made in adduser.conf.

The valid configuration options are:

If REMOVE_HOME or REMOVE_ALL_FILES is activated, all files are backed up before they are removed. The backup file that is created defaults to username.tar(.gz|.bz2) in the directory specified by the BACKUP_TO option. The compression method is chosen to the best that is available. Values may be 0 or 1. Defaults to 0.
Select compression algorithm for a home directory backup. Can be set to any suffix recognized by tar --auto-compress. Defaults to .gz.
If BACKUP is activated, BACKUP_TO specifies the directory the backup is written to. Defaults to the current directory.
A regular expression which describes all filesystem types which should be excluded when looking for files of a user to be deleted. Defaults to "(proc|sysfs|usbfs|devtmpfs|devpts|afs)".
A list of regular expressions, space separated. All files to be deleted in course of deleting the home directory or user-owned files elsewhere are checked against each of these regular expressions. If a match is detected, the file is not deleted. Defaults to a list of system directories, leaving only /home. Therefore only files below /home belonging to that specific user are going to be deleted.
Only delete a group if there are no users belonging to this group. Defaults to 0.
Removes all files on the system owned by the user to be removed. If this option is activated REMOVE_HOME has no effect. Values may be 0 or 1. Defaults to 0.
Removes the home directory and mail spool of the user to be removed. Value may be 0 (don't delete) or 1 (do delete). Defaults to 0.

/etc/deluser.conf

adduser.conf(5), delgroup(8), deluser(8)

Debian GNU/Linux