I use MIT ktutil a lot on Linux and I am fed up using the following sequence, even if command shortcuts and file name completion are here to help:

rkt my.keytab

Isn't there a way to get the same result in a "one-line" way from the shell? Either with an alias, a function, or just with another tool?


I always use klist instead to list the contents of keytab files out instead of ktutil.

Example #1 - klist

$ klist -kt /etc/somedir/conf/some.keytab
Keytab name: FILE:/etc/somedir/conf/some.keytab
KVNO Timestamp         Principal
---- ----------------- --------------------------------------------------------
   5 08/25/15 11:18:35 app/host1.dom.local@TD.COM
   5 08/25/15 11:18:35 app/host1.dom.local@TD.COM
   5 08/25/15 11:18:35 app/host1.dom.local@TD.COM
   7 08/25/15 11:18:35 app/host2.dom.local@TD.COM

Example #2 - process substitution

You can also use a redirect to ktutil's STDIN like so:

$ ktutil < <(echo -e "rkt /etc/somedir/conf/some.keytab\nlist")
ktutil:  rkt /etc/somedir/conf/some.keytab
ktutil:  list
slot KVNO Principal
---- ---- ---------------------------------------------------------------------
   1    5 app/host1.dom.local@TD.COM
   2    5 app/host1.dom.local@TD.COM
   3    5 app/host1.dom.local@TD.COM
   4    7 app/host1.dom.local@TD.COM
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I found a way with a shell function, after guessing ktutil may accept commands from stdin:

rkt() { echo -e "read_kt $1\nlist\nquit" | ktutil | grep -v "^ktutil:"; }

And invoke with rkt my.keytab

Works as far as file name contains no space.

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