66-intree

This command displays information about trees.

Interface

    66-intree [ -h ] [ -z ] [ -v verbosity ] [ -l live ] [ -n ] [ -o name,init,enabled,... ] [ -g ] [ -d depth ] [ -r ] tree

Exit codes

0 success
100 wrong usage
111 system call failed

Options

-h : prints this help.
-z : use color.
-v verbosity : increases/decreases the verbosity of the command.
- 1 : only print error messages. This is the default.
- 2 : also print warning messages.
- 3 : also print tracing messages.
- 4 : also print debugging messages.
-l live : changes the supervision directory of service to live. By default this will be /run/66. The default can also be changed at compile time by passing the --livedir=live option to ./configure. An existing absolute path is expected and should be within a writable and executable filesystem - likely a RAM filesystem—see 66-scandir.
-n : do not display the field name(s) specified.
-o : comma separated list of fields to display. If this option is not passed, 66-intree will display all fields.
-g : shows the dependency list of the service as a hierarchical graph instead of a list.
-d depth : limits the depth of the dependency list visualisation; default is 1. This implies -g option.
-r : shows the dependency list of tree in reverse mode.

(!) If tree is not specified 66-intree will display information about all available trees for the current owner of the process. In this case, It displays first the trees which is not marked enabled in alphabetical order then the trees marked enabled in start order.

Valid fields for -o options

name : displays the name of the tree.
init : displays a boolean value of the initialization state.
enabled : displays a boolean value of the enable state.
start : displays the list of tree(s) started before.
current : displays a boolean value of the current state.
allowed : displays the list of allowed user to use the tree.
symlinks : displays the target of tree’s symlinks.
contents : displays the contents of the tree.

Command and output examples

The command 66-intree boot, run as root user, on Obarun’s default system displays the following where boot is the tree used to properly boot the machine:

    Name         : boot
    Initialized  : yes
    Enabled      : no
    Starts after : None
    Current      : no
    Allowed      : root
    Symlinks     : svc->source db->source
    Contents     : tty12  system-hostname  mount-run  populate-run  mount-tmp  populate-tmp  mount-proc  mount-sys
                   populate-sys  mount-dev  mount-pts  mount-shm  populate-dev  mount-cgroups  00  modules-kernel  udevd
                   udevadm  devices-crypttab  system-hwclock  system-random  modules-system  system-sysctl
                   system-fontnkey  devices-dmraid  devices-btrfs  devices-lvm  devices-zfs  system-Devices  mount-swap
                   all-Mount  system-fsck  mount-fstab  all-System  mount-rw  local-iptables  local-ip6tables  local-loop
                   local-sethostname  local-time  local-authfiles  local-tmpfiles  local-rc  local-dmesg  all-Local
                   all-Runtime  All

The field name gives you the name of the tree.

The field Initialized tells you if the tree was initialized with 66-init tool.

The field Enabled reveals the state of the tree—see 66-tree -E.

The field Starts after reveals the start process order if the tree is enabled, meaning which tree is started before the current one.

The field Current tells you if the tree is the current one or not—see 66-tree -c.

The field Allowed gives you a list of user(s) allowed to handle the tree—see 66-tree -a|d.

The field Symlinks tells you if the current live state point to the source or the backup of the tree. Every use of 66-enable tool create a automatic backup of the tree for classic,bundle or atomic service(s). A symlink pointing to backup mean that you have enabled a service without starting it. Right after a boot, each tree should point to source.

The field Contents gives you a list of all services enabled in the tree.

You can display the contents list as a graph and only these fields using the command 66-intree -o contents -g boot:

    Contents    : /
                  ├─(253,Enabled,classic) tty12
                  ├─(0,Enabled,oneshot) system-hostname
                  ├─(0,Enabled,oneshot) mount-run
                  ├─(0,Enabled,oneshot) populate-run
                  ├─(0,Enabled,oneshot) mount-tmp
                  ├─(0,Enabled,oneshot) populate-tmp
                  ├─(0,Enabled,oneshot) mount-proc
                  ├─(0,Enabled,oneshot) mount-sys
                  ├─(0,Enabled,oneshot) populate-sys
                  ├─(0,Enabled,oneshot) mount-dev
                  ├─(0,Enabled,oneshot) mount-pts
                  ├─(0,Enabled,oneshot) mount-shm
                  ├─(0,Enabled,oneshot) populate-dev
                  ├─(0,Enabled,oneshot) mount-cgroups
                  ├─(0,Enabled,bundle) 00
                  ├─(0,Enabled,oneshot) modules-kernel
                  ├─(485,Enabled,longrun) udevd
                  ├─(0,Enabled,oneshot) udevadm
                  ├─(0,Enabled,oneshot) devices-crypttab
                  ├─(0,Enabled,oneshot) system-hwclock
                  ├─(0,Enabled,oneshot) system-random
                  ├─(0,Enabled,oneshot) modules-system
                  ├─(0,Enabled,oneshot) system-sysctl
                  ├─(0,Enabled,oneshot) system-fontnkey
                  ├─(0,Enabled,oneshot) devices-dmraid
                  ├─(0,Enabled,oneshot) devices-btrfs
                  ├─(0,Enabled,oneshot) devices-lvm
                  ├─(0,Enabled,oneshot) devices-zfs
                  ├─(0,Enabled,bundle) system-Devices
                  ├─(0,Enabled,oneshot) mount-swap
                  ├─(0,Enabled,bundle) all-Mount
                  ├─(0,Enabled,oneshot) system-fsck
                  ├─(0,Enabled,oneshot) mount-fstab
                  ├─(0,Enabled,bundle) all-System
                  ├─(0,Enabled,oneshot) mount-rw
                  ├─(0,Enabled,oneshot) local-iptables
                  ├─(0,Enabled,oneshot) local-ip6tables
                  ├─(0,Enabled,oneshot) local-loop
                  ├─(0,Enabled,oneshot) local-sethostname
                  ├─(0,Enabled,oneshot) local-time
                  ├─(0,Enabled,oneshot) local-authfiles
                  ├─(0,Enabled,oneshot) local-tmpfiles
                  ├─(0,Enabled,oneshot) local-rc
                  ├─(0,Enabled,oneshot) local-dmesg
                  ├─(0,Enabled,bundle) all-Local
                  ├─(0,Enabled,oneshot) all-Runtime
                  └─(0,Enabled,bundle) All

For each service the first field found between () parentheses is the corresponding pid of the service, the second one is the state of the service, and next to it is the type of the service, separated by commas, and finally the name of the service is displayed after the parenthesis ).

By default the dependency graph is rendered in the order of execution. In this example the classic tty12 is the first executed service and bundle All is the last before it finishes. You can reverse the rendered order with the -r option.

You can display the name and current field and only these fields for each tree using the command 66-intree -o name,current:

    Name        : boot
    Current     : no

    Name        : docker
    Current     : no

    Name        : root
    Current     : no

    Name        : test
    Current     : yes

    Name        : user
    Current     : no