-a bind_address
        Bind the agent to the UNIX-domain socket bind_address.  The default is
        $TMPDIR/ssh-XXXXXXXXXX/agent.<ppid>.

-c      Generate C-shell commands on stdout.  This is the default if SHELL looks like it's a csh style of
        shell.

-d      Debug mode.  When this option is specified ssh-agent will not fork.

-k      Kill the current agent (given by the SSH_AGENT_PID environment variable).

-s      Generate Bourne shell commands on stdout.  This is the default if SHELL does not look like it's a
        csh style of shell.

-t life
        Set a default value for the maximum lifetime of identities added to the agent.  The lifetime may be
        specified in seconds or in a time format specified in sshd_config(5).  A lifetime specified for an
        identity with ssh-add(1) overrides this value.  Without this option the default maximum lifetime is
        forever.