From: Todd C. Miller <Todd.Miller@courtesan.com>
Date: Wed, 25 Feb 2009 11:16:54 +0000 (+0000)
Subject: Document what happens if there is no tty.
X-Git-Tag: SUDO_1_7_1~40
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=4929b5160917023b77e9cb2c75d90feced9d9a99;p=sudo

Document what happens if there is no tty.
---

diff --git a/TROUBLESHOOTING b/TROUBLESHOOTING
index a90b5eb9f..8ca208058 100644
--- a/TROUBLESHOOTING
+++ b/TROUBLESHOOTING
@@ -177,6 +177,14 @@ A) The default user sudo tries to run things as is always root, even if
     Defaults:bob	runas_default=oracle
    would achieve the desired result ofr the preceding sudoers fragment.
 
+Q) When I try to run sudo via ssh, I get the error:
+    sudo: no tty present and no askpass program specified
+A) ssh does not allocate a tty by default when running a remote command.
+   Without a tty, sudo cannot disable echo when prompting for a password.
+   You can use ssh's "-t" option to force it to allocate a tty.
+   Alternately, if you do not mind your password being echoed to the
+   screen, you can use the "visiblepw" sudoers option to allow this.
+
 Q) How do you pronounce `sudo'?
 A) The official pronunciation is soo-doo (for su "do").  However, an
    alternate pronunciation, a homophone of "pseudo", is also common.