Crosh Shell Chromeos Basicos

crosh shell ChromeOS Chromebook

  • help [command]
    Display general help, or details for a specific command.

  • help_advanced Display the help for more advanced commands, mainly used for debugging.

  • ping [-4] [-6] [-c count] [-i interval] [-n] [-s packetsize] [-W waittime] Send ICMP ECHO_REQUEST packets to a network host. If is "gw" then the next hop gateway for the default route is used. Default is to use IPv4 [-4] rather than IPv6 [-6] addresses.

https://en.wikipedia.org/wiki/Ping_(networking_utility)

  • top Run top. This will tell you what resources are currently being used and low level system processes.

    Users should use the Chrome Task Monitor: press Search+Escape to open it.

    https://man7.org/linux/man-pages/man1/top.1.html https://gitlab.com/procps-ng/procps

  • autest [–scheduled]
    Trigger an auto-update against a test update server.

    WARNING: This may update to an untested version of ChromeOS which was never intended for end users!

    The –scheduled option fakes a scheduled update.

  • battery_firmware info : Query battery info.

  • battery_test [] Tests battery discharge rate for given number of seconds. Without an argument, defaults to 300 seconds.

  • bt_console Enters a Bluetooth debugging console.

  • chaps_debug [start|stop|] Sets the chapsd logging level. No arguments will start verbose logging.

  • connectivity Shows connectivity status. ‘connectivity help’ for more details

  • cras [ enable | disable | telephony [arg] ] Interact with CRAS(CrOS Audio Server) to set flags or trigger events.

    • Subcommands: enable/disable : Enable or disable feature flag inside CRAS.
      • Available flags:
      • wbs: Turn on this flag to make CRAS try to use wideband speech mode in Bluetooth HFP, if both the Bluetooth controller and peripheral supports this feature.
      • noise_cancellation: Turn on this flag to enable noise cancellation processing to input devices who support noise cancellation.

      Notice: The flag changes made through this command do not persist after reboot.

  • telephony [args...]: Trigger a telephony event pass to CRAS in Bluetooth HFP.

    Available events:
- IncomingCall <PhoneNumber>: Make a call from external line.
    Ex: $ cras telephony IncomingCall 12345678
- AnswerCall: Answer the call.
- TerminateCall: Terminate the call.
- SetDialNumber [DailNumber]: Set the last dialed number recorded. Clear
  the recorded number if no DailNumber is provided.
- SetBatteryLevel <BatteryLevel>: Set and transfer the battery level to
  HF. The BatteryLevel should range from 0 to 5.
- SetSignalStrength <SignalStrength>: Set and transfer the signal strength
  to HF. The SignalStrength should range from 0 to 5.
- SetServiceAvailability <0/1>: Set if the service is available or not.
- SetCallheld <CallHeldIndicator>: Set the callheld indicator.
  CallHeldIndicator:
    0 = No calls held
    1 = Call is placed on hold or active/held calls swapped
    (The AG has both an active AND a held call)
    2 = Call on hold, no active call
- SetCallsetup <CallSetupIndicator>: Set the callsetup indicator.
  CallSetupIndicator:
    0 = No call setup in progress
    1 = Incoming call setup in progress
    2 = Outgoing call setup in dialing state
    3 = Outgoing call setup in alerting state
- SetCall <CallIndicator>: Set the call indicator.
  CallIndicator:
    0 = No call (held or active)
    1 = Call is present (active or held)

  • diag Usage: [list|routine]

  • display_debug A tool to assist with collecting logs when reproducing display related issues.

    Subcommands: trace_start Usage: display_debug trace_start Increase size and verbosity of logging through drm_trace.

    trace_stop Usage: display_debug trace_stop Reset size and verbosity of logging through drm_trace to defaults.

    trace_annotate Usage: display_debug trace_annotate Append |message| to the drm_trace log.

    diagnose Usage: display_debug diagnose Give a sequence of steps to assist in debugging display issues.

  • dlc_install Trigger a DLC installation against a **test** update server.

The test update server will serve signed DLC payloads which will only successfully install if signed and verifiable. Otherwise, installations will fail. The magical string ‘autest’ is passed into update_engine during this installation, which will make requests against QA Omaha server and not the production Omaha server.

WARNING: This may install an untested version of the DLC which was never intended for end users!

  • dlc_list List the supported DLC(s)

Usage: dmesg [options] -d, –show_delta Display the timestamp and the time delta spent between messages -H, –human Enable human-readable output. -k, –kernel Print kernel messages. -L, –color Colorize the output. -p, –force-prefix Add facility, level or timestamp information to each line of a multi-line message. -r, –raw Print the raw message buffer. -T, –ctime Print human-readable timestamps. -t, –notime Do not print kernel’s timestamps. -u, –userspace Print userspace messages. -x, –decode Decode facility and level (priority) numbers to human-readable prefixes.

  • enroll_status [–mode] [–domain] [–realm] [–user]
    Displays device enrollment information.

  • evtest Run evtest in safe mode.

  • exit Exit crosh.

  • ff_debug Usage: ff_debug [] [--level ] [--persist] ff_debug --help ff_debug --reset ff_debug --list_valid_tags

ff_debug adds and removes debug tags for flimflam. Current debug settings are displayed if no parameters are provided

is defined in boolean notation using separated by an operator [+-], where + and - imply adding and removing of the tag immediately following the operator. An expression beginning with either operators [+-] takes the existing tags and modifies them appropriately. Otherwise, the existing tags are replaced by those specified in the command. can be listed using the --list_valid_tags e.g.: ff_debug network+wifi Sets debug tags to network and wifi e.g.: ff_debug +network-service Adds network and removes service tags from the existing debug settings --list_valid_tags : Displays all valid tags --level : Displays or sets current debug level for logging All messages at, or above, the current log level are logged. Normal log levels range from 4 (LOG_FATAL) to 0 (LOG_INFO). In addition VERBOSE log levels are available starting at -1. e.g.: ff_debug --level 4 Logs only FATAL messages. e.g.: ff_debug --level 0 Logs INFO, WARNING, ERROR, ERROR_REPORT, and FATAL messages. e.g.: ff_debug --level -4 Logs everything that "--level 0" does, plus SLOG(, ) messages, where has been enabled for logging, and <= 4. (NOTE: you must negate SLOG levels for use with ff_debug. In this example, SLOG(, 4) maps to "--level -4".) --reset : Removes all tagging and persistent debug configuration (if any) and restores default log level --persist : Stores the current debug configuration so that it is reused after restart. --help : Displays this output * force_activate_fips Force activate FIPS mode for the built-in security key. * free [options] Display free/used memory info. * generate_firmware_dump <all|wifi> Generate firmware dump for the given type. * gesture_prop [ devices | list | get | set ] Read and change gesture properties for attached input devices. The "Enable gesture properties D-Bus service" flag must be enabled for this command to work. For more details, see: https://chromium.googlesource.com/chromiumos/platform/gestures/+/HEAD/docs/gesture_properties.md ### Subcommands: - devices, devs: List the devices managed by the gestures library, with their numeric IDs. - list : List the properties for the device with the given ID. - get : Get the current value of a property. Property names containing spaces should be quoted. For example: $ gesture_prop get 12 "Mouse CPI" - set : Set the value of a property. Values use the same syntax as dbus-send (https://dbus.freedesktop.org/doc/dbus-send.1.html#description), and should either be arrays or strings. For example: $ gesture_prop set 12 "Mouse CPI" array:double:500 $ gesture_prop set 12 "Log Path" string:/tmp/foo.txt * ipaddrs [-4] [-6] Display IP addresses. -4: Only show IPv4 addresses. -6: Only show IPv6 addresses. * meminfo Display detailed memory statistics. * memory_test Performs extensive memory testing on the available free memory. * modem [args...] Interact with the 3G modem. Run "modem help" for detailed help. * p2p_update [enable|disable] [--num-connections] [--show-peers] Enables or disables the peer-to-peer (P2P) sharing of updates over the local network. This will both attempt to get updates from other peers in the network and share the downloaded updates with them. Run this command without arguments to see the current state. Additional switches will display number of connections and P2P peers. 
Usage: packet_capture [options]
        --device        
        --max-size      
        --frequency     
        --ht-location   <above|below>
        --vht-width     <80|160>
        --monitor-connection-on         
</pre>
Start packet capture.  Start a device-based capture on ,
  or do an over-the-air capture on  with an optionally
  provided HT channel location or VHT channel width.  An over-the-air
  capture can also be initiated using the channel parameters of a
  currently connected .  Note that over-the-air
  captures are not available with all 802.11 devices. Set 
  to stop the packet capture if the output .pcap file size exceedes this
  limit. Only device-based capture options (--device and --max-size) are
  available in verified mode. Switch to developer mode to use other
  options.


* printscan_debug
  A tool to assist with collecting logs when reproducing printing and scanning related issues.

  Subcommands:
    start Usage: printscan_debug start [all|scanning|printing]
      Start collecting printscan debug logs.

    stop Usage: printscan_debug stop
      Stop collecting printscan debug logs.

* rlz < status | enable | disable >  
  Enable or disable RLZ.  See this site for details:
  http://dev.chromium.org/developers/design-documents/extensions/proposed-changes/apis-under-development/rlz-api

* rollback
  
  Attempt to rollback to the previous update cached on your system. Only
  available on non-stable channels and non-enterprise enrolled devices.

  Please note that this will powerwash your device.

* route [-4] [-6] [--all]  
  Display the network routing tables.
  https://en.wikipedia.org/wiki/Routing_table

  -4: Only show IPv4 routes.
  -6: Only show IPv6 routes.
  --all: Show all routing tables.

* help: unknown command 'set_apn'
 * set_arpgw <true | false>  
  Turn on extra network state checking to make sure the default gateway
  is reachable.

https://en.wikipedia.org/wiki/Default_gateway

* set_time