implement basic functions
list
root@turris:/tmp# netboot-manager -j list-all
{
"accepted": [
]
,
"incoming": [
"0000000D30000299"
]
}
root@turris:/tmp# echo $?
0
revoke
root@turris:/tmp# netboot-manager -j revoke 0000000D30000299
root@turris:/tmp# echo $?
0
root@turris:/tmp# netboot-manager -j revoke 0000000D30000299
root@turris:/tmp# echo $?
1
accept
root@turris:/tmp# netboot-manager -j accept 0000000D30000299
root@turris:/tmp# echo $?
0
root@turris:/tmp# netboot-manager -j accept 0000000D30000299
root@turris:/tmp# echo $?
1