kinit: add page (#10184)

* kinit: add page

Add in an initial page for the kinit kerberos ticketing utility.

* Update pages/common/kinit.md

Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

* Update pages/common/kinit.md

make the keytab path relative per style guideline

Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

---------

Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

pages/common/kinit.md

@@ -0,0 +1,29 @@
+# kinit
+
+> Authenticate a principal with a Kerberos server to gain and cache a ticket.
+> Note: A Kerberos principal can be either a user, service, or application.
+> More information: <https://web.mit.edu/kerberos/krb5-1.12/doc/user/user_commands/kinit.html>.
+
+- Authenticate a user and obtain a ticket-granting ticket:
+
+`kinit {{username}}`
+
+- Renew a ticket-granting ticket:
+
+`kinit -R`
+
+- Specify a lifetime for the ticket:
+
+`kinit -l {{5h}}`
+
+- Specify a total renewable lifetime for the ticket:
+
+`kinit -r {{1w}}`
+
+- Specify a different principal name to authenticate as:
+
+`kinit -p {{principal@REALM}}`
+
+- Specify a different keytab file to authenticate with:
+
+`kinit -t {{path/to/keytab}}`