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-rw-r--r--doc/sh-utils.texi8
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/sh-utils.texi b/doc/sh-utils.texi
index 556f0aea9..488cded5b 100644
--- a/doc/sh-utils.texi
+++ b/doc/sh-utils.texi
@@ -2038,6 +2038,14 @@ After the login time, print the number of hours and minutes that the
user has been idle. @samp{.} means the user was active in last minute.
@samp{old} means the user was idle for more than 24 hours.
+@item -l
+@itemx --lookup
+@opindex -l
+@opindex --lookup
+Attempt to canonicalize hostnames found in utmp through a DNS lookup. This
+is not the default because it can cause significant delays on systems with
+automatic dial-up internet access.
+
@item -H
@itemx --heading
@opindex -H