KTUTIL(1) User Commands KTUTIL(1)


NAME


ktutil - Kerberos keytab maintenance utility

SYNOPSIS


/usr/bin/ktutil


DESCRIPTION


The ktutil command is an interactive command-line interface utility for
managing the keylist in keytab files. You must read in a keytab's
keylist before you can manage it. Also, the user running the ktutil
command must have read/write permissions on the keytab. For example, if a
keytab is owned by root, which it typically is, ktutil must be run as
root to have the appropriate permissions.

COMMANDS


clear_list
clear
Clears the current keylist.


read_kt file
rkt file
Reads a keytab into the current keylist. You must
specify a keytab file to read.


write_kt file
wkt file
Writes the current keylist to a keytab file. You
must specify a keytab file to write. If the keytab
file already exists, the current keylist is
appended to the existing keytab file.


add_entry number
addent number
Adds an entry to the current keylist. Specify the
entry by the keylist slot number.


delete_entry number
delent number
Deletes an entry from the current keylist. Specify
the entry by the keylist slot number.


list
l
Lists the current keylist.


list_request
lr
Lists available requests (commands).


quit
exit
q
Exits utility.


EXAMPLES


Example 1: Deleting a principal from a file




The following example deletes the host/denver@EXAMPLE.com principal from
the /etc/krb5/krb5.keytab file. Notice that if you want to delete an
entry from an existing keytab, you must first write the keylist to a
temporary keytab and then overwrite the existing keytab with the
temporary keytab. This is because the wkt command actually appends the
current keylist to an existing keytab, so you can't use it to overwrite a
keytab.


example# /usr/krb5/bin/ktutil
ktutil: rkt /etc/krb5/krb5.keytab
ktutil: list
slot KVNO Principal
---- ---- ---------------------------------------
1 8 host/vail@EXAMPLE.COM
2 5 host/denver@EXAMPLE.COM
ktutil:delent 2
ktutil:l
slot KVNO Principal
---- ---- --------------------------------------
1 8 host/vail@EXAMPLE.COM
ktutil:wkt /tmp/krb5.keytab
ktutil:q
example# mv /tmp/krb5.keytab /etc/krb5/krb5.keytab


FILES


/etc/krb5/krb5.keytab
keytab file for Kerberos clients


ATTRIBUTES


See attributes(7) for descriptions of the following attributes:


+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | See below. |
+--------------------+-----------------+


The command arguments are Evolving. The command output is Unstable.

SEE ALSO


attributes(7), kerberos(7), k5srvutil(8), kadmin(8)


November 22, 2021 KTUTIL(1)