RONMENT</H2>

<DL COMPACT>
<P>

<DT><B>DISPLAY and SSH_ASKPASS</B>


<DD>
If
<B>ssh-add</B>


needs a passphrase, it will read the passphrase from the current
terminal if it was run from a terminal.
If
<B>ssh-add</B>


does not have a terminal associated with it but
<B>DISPLAY</B>

and
<B>SSH_ASKPASS</B>

are set, it will execute the program specified by
<B>SSH_ASKPASS</B>

and open an X11 window to read the passphrase.
This is particularly useful when calling
<B>ssh-add</B>


from a
.xsession

or related s