loggrep

Loggrep is a awesome tool to analyze/view logcat (Android logs with custom filters and views

It's totally inspired on pidcat from Jake Wharton

Getting Started

Show all logcat log entries

npx loggrep logcat -f=@all

Available filters:

• @all
• @none
• @pidcat
• @banana

My custom filter

npx loggrep logcat -f=./banana.js

./banana.js :

const handler = async () => {
  const filters = [
    // filter "ActivityManager" tag
    {tag: /^ActivityManager$/},
  ]

  return {
    filters,
  }
}

exports.handler = handler

More examples like ./banana.js:

const handler = async () => {
  const filters = [
    // filter "Zygote" tag
    {tag: /^Zygote$/},

    // filter "Error" level
    {level: /^E$/},

    // filter process with pid "1234"
    {pid: /^1234$/},

    // filter log entries with tag "ActivityManager" and messages starting with "Received BROADCAST intent"
    {
      tag: /^ActivityManager$/,
      message: /^Received BROADCAST intent/
    },

    // custom function
    // return true to show a log entry
    ({
      tag, line, level, tag, pid, message
    }) => tag.endsWith('Manager'),
  ]

  return {
    filters,
  }
}

exports.handler = handler

Why loggrep?

Filter adb logcat output is a painful task. If you'd like to filter by tag, message, log level or pid; you probably already used a combination of grep commands. But if you are debugging Android OS (framework, applications, radio etc.) in debug mode, you know that it's impossible to handle it.

loggrep is a tool with powerful and customizable filters/formatters that will help you.

P.S.: if you're trying to filter only your application log, you just need Jake Wharton's pidcat

• Getting Started
• Why loggrep?
• Usage
• Commands

Usage

$ npm install -g loggrep
$ loggrep COMMAND
running command...
$ loggrep (--version)
loggrep/2.1.0 darwin-x64 node-v16.13.1
$ loggrep --help [COMMAND]
USAGE
  $ loggrep COMMAND
...

Commands

• loggrep help [COMMAND]
• loggrep logcat
• loggrep plugins
• loggrep plugins:inspect PLUGIN...
• loggrep plugins:install PLUGIN...
• loggrep plugins:link PLUGIN
• loggrep plugins:uninstall PLUGIN...
• loggrep plugins update

loggrep help [COMMAND]

Display help for loggrep.

USAGE
  $ loggrep help [COMMAND] [-n]

ARGUMENTS
  COMMAND  Command to show help for.

FLAGS
  -n, --nested-commands  Include all nested commands in the output.

DESCRIPTION
  Display help for loggrep.

See code: @oclif/plugin-help

loggrep logcat

describe the command here

USAGE
  $ loggrep logcat [-h] [-f <value>] [-c <value>] [-i <value>] [-R]

FLAGS
  -R, --shouldReset         reset adb log
  -c, --config=<value>      config file
  -f, --filters=<value>...  [default: @all] filters
  -h, --help                Show CLI help.
  -i, --input=<value>       input path

DESCRIPTION
  describe the command here

EXAMPLES
  $ loggrep logcat --f=@all

  $ loggrep logcat --f=./myfilter

  $ loggrep logcat -i=../logs/mylog.txt

  $ loggrep logcat -R

See code: dist/commands/logcat/index.ts

loggrep plugins

List installed plugins.

USAGE
  $ loggrep plugins [--core]

FLAGS
  --core  Show core plugins.

DESCRIPTION
  List installed plugins.

EXAMPLES
  $ loggrep plugins

See code: @oclif/plugin-plugins

loggrep plugins:inspect PLUGIN...

Displays installation properties of a plugin.

USAGE
  $ loggrep plugins:inspect PLUGIN...

ARGUMENTS
  PLUGIN  [default: .] Plugin to inspect.

FLAGS
  -h, --help     Show CLI help.
  -v, --verbose

DESCRIPTION
  Displays installation properties of a plugin.

EXAMPLES
  $ loggrep plugins:inspect myplugin

loggrep plugins:install PLUGIN...

Installs a plugin into the CLI.

USAGE
  $ loggrep plugins:install PLUGIN...

ARGUMENTS
  PLUGIN  Plugin to install.

FLAGS
  -f, --force    Run yarn install with force flag.
  -h, --help     Show CLI help.
  -v, --verbose

DESCRIPTION
  Installs a plugin into the CLI.

  Can be installed from npm or a git url.

  Installation of a user-installed plugin will override a core plugin.

  e.g. If you have a core plugin that has a 'hello' command, installing a user-installed plugin with a 'hello' command
  will override the core plugin implementation. This is useful if a user needs to update core plugin functionality in
  the CLI without the need to patch and update the whole CLI.

ALIASES
  $ loggrep plugins add

EXAMPLES
  $ loggrep plugins:install myplugin 

  $ loggrep plugins:install https://github.com/someuser/someplugin

  $ loggrep plugins:install someuser/someplugin

loggrep plugins:link PLUGIN

Links a plugin into the CLI for development.

USAGE
  $ loggrep plugins:link PLUGIN

ARGUMENTS
  PATH  [default: .] path to plugin

FLAGS
  -h, --help     Show CLI help.
  -v, --verbose

DESCRIPTION
  Links a plugin into the CLI for development.

  Installation of a linked plugin will override a user-installed or core plugin.

  e.g. If you have a user-installed or core plugin that has a 'hello' command, installing a linked plugin with a 'hello'
  command will override the user-installed or core plugin implementation. This is useful for development work.

EXAMPLES
  $ loggrep plugins:link myplugin

loggrep plugins:uninstall PLUGIN...

Removes a plugin from the CLI.

USAGE
  $ loggrep plugins:uninstall PLUGIN...

ARGUMENTS
  PLUGIN  plugin to uninstall

FLAGS
  -h, --help     Show CLI help.
  -v, --verbose

DESCRIPTION
  Removes a plugin from the CLI.

ALIASES
  $ loggrep plugins unlink
  $ loggrep plugins remove

loggrep plugins update

Update installed plugins.

USAGE
  $ loggrep plugins update [-h] [-v]

FLAGS
  -h, --help     Show CLI help.
  -v, --verbose

DESCRIPTION
  Update installed plugins.