Get system log from macOS(10.12+) much easier

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.

How to use maclog?

• 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, following the below step:

• Download the latest source code by entering the following command in a terminal window:

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

• Build the project by typing:

cd maclog
clang maclog.m -fobjc-arc -fmodules -mmacosx-version-min=10.6 -o maclog

Arguments

maclog default behaviour is to show all log messages of the current day.

The following arguments modify this behavior:

• --boot: Show log messages since last boot time.
• --sleep: Show log messages since last sleep time.
• --wake: Show log messages since last wake time.
• --darkWake: Show log messages since last darkWake time.
• --stream: Show log messages in real time.
• --filter <query>: Filter log messages by <query>

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

note: The --stream option result in the maclog process being never finished, due to the necessity of redirecting all logs to Console in real-time.

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

Change Log

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