Maclog

Get system log from macOS much easier for debugging

macOS Sierra introduced a new mechanism for both application and system level logging. Thus we can no longer get system.log from /var/log/system.log. Which made developer's debugging life further from innocence. That's why I started this project to just simply log all of system.log to console. More functionality will be added later, if you have a good idea for this project, don't hesitate to make a pull request for me :)

I wait for you. Wish you all enjoy this tiny but useful program.

Install

• Download binary executable program here.
• Double left click to execute it (Note: for first time launch: Right Click ▶ Open)

If you want to compile it, follow these step in a terminal window:

• Download the latest source code by entering the following command:

git clone https://github.com/syscl/maclog

• Change to project directory:

cd maclog

• Build the project:

clang src/*.c -Os -Iinclude -fobjc-arc -fmodules -mmacosx-version-min=10.6 -o maclog

• Or if you have Xcode installed:

xcodebuild

Usage

CLI

USAGE: maclog [--version|-v] [--help|-h]
USAGE: maclog [log mode] [filter]

Arguments:

• --help, -h: Show maclog help info.
• --version, -v: Show maclog version info.
• Log Modes:
  • --boot, -b: Show log messages since last boot time.
  • --darkWake, -d: Show log messages since last darkWake time.
  • --sleep, -s: Show log messages since last sleep time.
  • --stream, -S: Show log messages in real time.
  • --wake, -w: Show log messages since last wake time.
• Filter:
  • --filter, -f: Show log messages filtered by the .
  • --filterMessage, -F: Shorthand for -f "eventMessage CONTAINS[c] <query>"

NOTE: The default behaviour is to show all log messages of the current day.

NOTE: The messages returned by --boot, --sleep, --wake, --darkWake can be from previous days, depending on the last time each action occurred.

NOTE: The --filter option can be used with any other above arguments. This can be handy for sorting out certain logs.

Change Log

2017-8-1

• Fixes filter's "Failed to allocate memory" bug on default mode
• Fixed clang build command
• Bump version to v1.7 (c) @HeavenVolkoff

2017-7-27

• Code organization overhaul
• Added --filterMessage option
• Added License file
• Cleaner process management

2017-7-19

• Better error handling
• Better memory management
• No longer hangs process on --stream mode
• Open a new instance of Console.app for each maclog execution
• Prevents multiple instances of maclog from executing and altering the same file
• Delete /tmp/system.log on exit

2017-7-18

• Better parsing of command line arguments
• Fixed sizeof filter bug
• Bump version to v1.6 (c) @MuntashirAkon @HeavenVolkoff

2017-7-17

• Added --filter option
• Added help in case of providing an invalid argument
• Code improvements

2017-6-22

• Added --stream option
• Added .xcodeproj file
• Some code improvements

2017-6-21

• Added --sleep, --wake, --darkWake options
• Added char *gPowerManagerDomainTime(const char *domain)
• Added Power Management's ASL keys definitions
• Changed error handling logic in char *gBootTime(void)
• Bump version to v1.4 (c) @HeavenVolkoff

2017-6-20

• Added --boot option
• Added char *gBootTime(void)
• Removed some unneeded headers

2017-1-8

• Release v1.2 binary executable program credit @schdt899 @smolderas @BreBo
• Add *gCurTime(void)
• Remove strdup(char *)
• Optimize code

2017-1-7

• Release v1.0 binary executable program
• Release source code

License

Maclog by syscl is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.