How do i see what functions are defined in your login session?

giraffelife

To see defined shell functions in your login

$ declare -F
declare -f _update_initramfs
declare -f _upstart_events
declare -f _upstart_initctl
declare -f _upstart_jobs
declare -f _upstart_reload
declare -f _upstart_restart
declare -f _upstart_start
declare -f _upstart_startable_jobs
declare -f _upstart_status
declare -f _upstart_stop
declare -f _upstart_stoppable_jobs

To see the contents of functions run it with lowwecase -f and the name of the function

$ declare -f quote
quote () 
{ 
    local quoted=${1//\'/\'\\\'\'};
    printf "'%s'" "$quoted"
}

To unset a function, if you logout and back in, it will be set again.

$ unset -f quote
$ declare -f quote