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Questions tagged [logs]

System files that contain system event information, errors, and crash information.

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How to show dnsmsaq logs in apple unified log

Dnsmasq has the option to log queries to a file or the syslog. Logging queries to a file is way too verbose and fills the disk very quickly, so I need to use the syslog facility. Since (at least) Big ...
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View log-levels for entries added by “logger” command

I log with /usr/bin/logger, which provides a switch -p to set the priority. Example: logger -p user.warning "My program crashed." I can see this message via the Console, but I don’t see its ...
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My MacBook Wake up for No Reason

My current system is MacOS Monterey 12.2.1. I found my MacBook waked up for no reason at night. At first I though it was because of my keyboard was pressed, so I switched off my Bluetooth mouse and ...
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3 votes
2 answers
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XProtect - Apple claims they do signature based antivirus but how do we know?

I read this Apple Support page that they use XProtect to scan for known viruses. I cannot find any evidence that XProtect is getting new definitions or scanning anything. Where can I find the logs and ...
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Get Historic System Event Logs (Sleep, Restart, Wake-up etc)

How can I get the power-related events (Sleep, restart, wake-up) for the current system, like e.g. 2022-02-27T08:02:01 System Restarted 2022-02-28T08:34:32 Resumed from sleep 2022-02-28T15:15:11 Sleep ...
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-1 votes
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How can I read Face ID logs in my iPhone?

I want to see what is stored in my iPhone when I use Face ID technology to log in. Is there any way to retrieve a log related to this topic from my iPhone?
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1 answer
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Where are the authentication logs, and how to send to remote syslog server

Where are the authentication logs (failed, successful logins) and how do you send them to a remote syslog server on the latest version of MacOS? It appears i'm part of of 0.1% of people who want to ...
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How to retrieve old logs that are no longer in var/log/ [duplicate]

Is there a way recover old (going back to early-mid Nov 2021) system log files that are no longer in var/log/?
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macOS Monterey find last time Bluetooth mouse was connected

I have lost my Bluetooth Mouse. I would like to find the last date of connection to know when i last had it. I already tried blueutil --recent the output does update the time everytime I retry the ...
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2 answers
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Macbook crashes randomly. CPU problem?

MacBook Pro (Mid-2014 11,3) (C02P42JBG3QP) 11.6 My MacBook will crash randomly throughout the day as I'm working. If I leave it open and don't touch it, it will be fine. But as I use multiple apps, ...
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Keep all messages in Console

On macOS High Sierra (10.13.6), Console.app automatically trims old messages when it exceeds 50000. Significance: When I'm searching for specific keywords or processes, after I select the relevant ...
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List all entries of 'Lock Screen' events from logs

I am trying to access the logs that show when the screen was locked (e.g Apple Icon > Lock Screen). After looking in the Console app I think the event is called 'kAELockScreenEvent', but I am not ...
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Wifi logging roaming

I was looking at my wifi logs (i have wifi logging enable) from time to time i have something like this : Tue Dec 15 13:21:12.857 Driver Event: <airport[175]> _bsd_80211_event_callback: ...
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What does ContextStoreAgent do, and how can its database errors be fixed?

On my macOS 11.5.2 (Big Sur) system, the logs are full of the following error reported by a process called ContextStoreAgent: CoreData: PostSaveMaintenance: performPostSaveTasks threw something (1). ...
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Macbook Pro Crashing when using Chrome

My MBP Pro has been crashing a lot recently. The display will go black, then the keyboard lights will turn off about 5 seconds later. Then it turns off completely. Then I'll have to hit the power ...
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Routing apple native logs of specific module to rotating set of files

one of the benefits of using Apple native logging framework (NSLog or os_log) is the synchronization between multiple processes generating log messages to the same console - It's achieved by managing ...
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Get Bluetooth (AirPods) logs

I am trying to find the last location of my lost AirPods. Is there a chance to find a log file in my iPhone showing the last connection with them? I do not have a macOS in order to use this solution ...
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1 answer
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Outgoing mail logs location?

I got a dead simple script for testing sending email from my local machine: #!/usr/bin/env perl print "Sending email to $ARGV[0]\n"; my $result = system qq(echo "Hello World" | ...
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1 vote
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Why is wifi log filling with Usb Host Notification messages?

A backup external hard drive (WD G Drive) is attached via USB. When I detach it, the messages below stop. When I reattach it, the messages don't continue. I was casually checking logs on a Mac with ...
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1 vote
1 answer
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Strange: Disk space is not free after removing file

I have a strange problem and hope I can find a solution here. I'm using a VPN to connect a linux server. When I downloaded ~2Gb binary file from the server to an extra data disk, I found the system ...
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2 votes
1 answer
149 views

Terminal command to delete unnecessary logs

Avast antivirus says that my mac running Mojave has 1.25 GB of "unnecessary logs": The Avast website does not provide information about their meaning. What are they? How can I delete them ...
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1 vote
0 answers
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Inspect kernelmanagerd log

With BigSur, I have the notorious problem of the kernelmanagerd process constantly using a large part of the CPU (at least 35/40%). so, following the various guides found online, I have: uninstalled ...
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/private/var/log/install.log too big

'Too big' might be a relative concept, but most of the files I see in var/log are measured in KB. install.log is 1.7GB & goes all the way back to 2018. I'd kind of assumed that automatic trimming/...
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3 answers
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Keynote, Pages and Numbers all quit unexpectedly

Today Keynote, Pages and Numbers all quit unexpectedly right after being launched. I only have time to see the "Select a document / New document" window for a second before the apps crash, ...
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1 answer
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Determining/associating the log subsystem for apps installed via package managers

I've watched this highly informative talk on the unified logs and been reading whatever documentation or blog posts I can find on the subject, but I haven't found or don't understand how to link an ...
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2 votes
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How do you turn on crontab logging on Big Sur?

I am running macOS Big Sur 11.2.1 and have several crontab jobs set up and they work fine, but I want to turn on the logging of all of my crontab jobs. I have read that with the recently releases such ...
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Logs in Console / Disk Usage

With a modern version of macOS, like Big Sur, if you open Console, you see tonnes and tonnes of messages streaming as soon as you press "start". I was wondering, it seems like the chatter ...
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1 answer
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WindowServer: (CoreDisplay) [com.apple.CoreDisplay:default] [DEBUG] spamming my console and doing excessive amounts of disk activity

Macmini8,1 (2018) running up to date 10.14.6 OSX Mojave: My console is getting absolutely destroyed and followed with 'WindowServer: (CoreDisplay) [com.apple.CoreDisplay:default] [DEBUG]' messages and ...
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3 votes
1 answer
499 views

How can I find out which kernel extension has been updated?

I received a notification on Big Sur that an extension was updated and this must be authorised in System Preferences. It is 'System software from developer "Apple Inc."'. I find this odd: I ...
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1 vote
0 answers
174 views

Logging from AppleScript in Automator

I am writing an AppleScript (Run AppleScript item) from within an application in Apple Automator, but the Log panel at the bottom of the window does not display any logged messages (that is, anything ...
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how remove Apple support screen sharing software

I contacted the Apple support team and the technician asked me to install a software on my macbook so as to share my screen with him. I granted "record screen" permission to this software. A ...
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Extracting diagnostic logs from iPad 2 with macOS Catalina

I have an iPad 2 from wich I want to extract the diagnostic logs. The use case is a failed activation that blocks me from using the iPad or restoring it with my Laptop. I have a separate question for ...
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1 vote
1 answer
319 views

macOS: find last time AirPods Bluetooth headphones were connected/in the range

I have either lost my AirPods either someone stole them, and I would like to find more details to find which possibilities is most likely. Unfortunately my AirPods are not listed under Find My (...
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How do I need to configure the macOS logging system to log LOG_INFO messages from Perl?

In the dovecot port for macOS in MacPorts, there is a pushnotify capability (requires you to be able to create the right certificates). This is perl code that contains the following snippet: # Open ...
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macOS removes log files in unwanted way

My computer is used for website development. As part of the website application, I have created log files, which previously had been stored in /var/log/webapps/appname (where appname varies per ...
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-1 votes
1 answer
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Could running Python and Matplotlib be keeping my computer from sleeping? How can I find out?

I have noticed that sometimes when I open my laptop the battery had dropped to 99% or even 97% after a day or so. I have it set up to sleep after being closed for 5 seconds, and I've verified that by ...
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Identify which user or process initiated normal shutdown?

I'd like to identify why (who, what) showdown my MacBook Pro while it was left unattended. Some unsaved work was lost. It is fairly likely that a careless admin script was run through some automated ...
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User Directory contents lost after Catalina combo update

I was updating the Catalina Combo update, and after a while, the update is still there pending but many of my applications and most importantly All my directories and files in my home directory are ...
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Logs of installed applications

Based on this question: How to read iPhone system logs? Will I find in these logs when applications were installed?
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1 vote
1 answer
411 views

Viewing Logs on Startup volume that freezes

I have a MacBook Pro (Computer A) which freezes / restarts during startup. To investigate the problem, I purchased a brand new internal disk and did a basic installation (10.13 - the latest this model ...
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16 votes
1 answer
11k views

Observing what Spotlight's mdworker is indexing for diagnostic purposes

There has been a history of people reporting mdworker processes taking up lots of CPU time on older machines, but apart from vague suggestions to just re-create the entire Spotlight index, I could not ...
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1 answer
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How do I browse logs in /var/log in Console.app on Catalina?

Up to and including Mojave, /var/log was listed in the sidebar of Console.app, allowing me to browse subfolders and, for instance, look at /var/log/powermanagement logs for previous days. But in ...
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Where are OS-level crash reports stored? [duplicate]

I have a machine that has some intermittent rebooting. When it restarts, I get the familiar dialog to report this to Apple. I don't always remember to save the details of the crash. I'm sure that ...
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2 votes
1 answer
54 views

How can I log edits to the hosts file?

A guy I'm helping fix his Mac and he's got some process on there editing his host file to redirect queries to the Minecraft authentication servers (authserver.mojang.com and sessionserver.mojang.com) ...
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2 votes
2 answers
448 views

Deleting Wifidiagnostics file and others under private/var/temp and /folder on Catalina

Is it safe to delete the Wifidiagnostics file even though its in private/var/tmp? My understanding was that it's better to leave those folders alone in Catalina but I'm not that experienced a user. ...
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1 answer
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Where are the memory and kernel logs stored in macOS Catalina?

I want to learn how to debug kernel crashes and am not at all familiar with macOS logging. Specifically the logs files that might reveal a system crash for example due to kernel panics. Does Apple ...
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2 votes
2 answers
308 views

Battery status and replacement

About a week ago my battery status (MacBook Pro mid 2017) claimed that the battery should be replaced after 250 cycles. Now, all of a sudden the battery status has returned to normal. ioreg -l -w0 |...
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5 votes
1 answer
3k views

Can I have launchctl output stdout/stderr from my application to the system-wide Unified Logging mechanism?

I have set up a custom .plist in ~/Library/LaunchAgents to run a process (offlineimap) on a periodic basis. I've specified both the StandardOutPath and StandardErrorPath keys to point to files in my ...
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1 vote
1 answer
54 views

Log/list of external/unauthorized programs that were given permission to open

When an app/program is not from an authorized developer, it cannot be opened directly because of security settings. These security settings can be overridden by adding the app as an exception to the ...
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2 votes
1 answer
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Can iOS apps retrieve user access logs after being deleted?

Specifically, I used an iPad app while it was offline, then deleted it. I assume that it keeps logs of access into the app and whatnot. Can an app be able to gain access to these offline logs after ...
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