How can I direct messages from mac console.app to a log file? Post: 303038443

Sponsored Content

Operating Systems OS X (Apple) How can I direct messages from mac console.app to a log file? Post 303038443 by dallas88 on Tuesday 3rd of September 2019 09:22:48 AM

09-03-2019

Registered User

How can I direct messages from mac console.app to a log file?

I'm trying to complete a bash script to capture if an external webcam is active in a video conference session. Some users will switch the camera to the built-in MAC camera. When this happens I want to trigger a set of events.

Things tried: reviewed the console.app to look for patterns on when the switch occurs in a user test & discovered messages indicating when the facetime camera changes state. I found this

Code:

019-08-31 22:59:57.387405 -0500 AppleCameraInterface default 0 22:59:57.387405 -0500 kernel AppleCamIn::power_on_hardware

2019-08-31 22:59:57.814936 -0500 AppleCameraAssistant default 438 22:59:57.814936 -0500 AppleCameraAssistant StartHardwareStream: creating frame receiver: 1280 x 720 (420v) [12.00,30.00]fps

2019-08-31 22:59:59.679037 -0500 AppleCameraAssistant default 438 22:59:59.679037 -0500 AppleCameraAssistant StopHardwareStream 2019-08-31 22:59:59.809252 -0500 AppleCameraInterface default 0 22:59:59.809252 -0500 kernel AppleCamIn::power_off_hardware

I thought I could simply grep these message from the console.app but it seems to be easier said than done. I thought i could find the msgs in one of the console report files but When I look at the various reports on the console, i'm not finding a report that contains the messages above. How can I direct messages from console.app to a log file versus manually copying and pasting the info from the console?or point me to a direction? Am I missing something?

dallas88

View Public Profile for dallas88

Find all posts by dallas88

7 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Re-direct the error msg to log file

Hi All, I have an expression as follows:- a=`expr ${i} + ${j}` >> $log_file 2>&1 Here, if any of the values i or j or both happens to be empty then the "expr" returns error as "expr: 0402-050 Syntax error." My problem is I am not able to re-direct this error to the log file. Its is getting...

2. Shell Programming and Scripting

Direct the output of a script to a log file

Hi, I have a script to compare 2 files. file1=$1 file2=$2 num_of_records_file1=`awk ' END { print NR } ' $file1` num_of_records_file2=`awk ' END { print NR } ' $file2` i=1 while do sed -n "$i"p $file1 > file1_temp sed -n "$i"p $file2 > file2_temp diff file1_temp...

3. Shell Programming and Scripting

Set default app for file type on Mac

Hi there, We have 2 apps on our customers machines that can both open files with the same file extension. Is there any way via shell commands to set which application should be the default? Essentially, I'm hoping to replicate Get Info > Open With > Change All using a shell script, but I just...

4. Shell Programming and Scripting

Need Mac .sh to run command line app in seperate terminal

Hello, currently we are executing a .sh from terminal. The current .sh looks like this: #!/usr/bin/env bash /Users/user/my.app/Contents/MacOS/my & -- Now, we also need to run a third line in the .sh - It's a command line application that I need to run when I execute the above .sh...

5. UNIX for Dummies Questions & Answers

re-direct to log file

#!/bin/ksh -x cd /tmp/tj ftp -n servername.com << DONE user username password as put test.log quit close DONE echo "testing..." sh -x scriptname, and it shows all, but username, as, put, quit, close, DONE. how can i see those ?

6. Shell Programming and Scripting

Manipulating sed Direct Input to Direct Output

Hi guys, been scratching round the forums and my mountain of resources. Maybe I havn't read deep enough My question is not how sed edits a stream and outputs it to a file, rather something like this below: I have a .txt with some text in it :rolleyes: abc:123:xyz 123:abc:987...

7. Cybersecurity

Best practice to allow 3rd party app to read messages file.

What is the best practice to allow a 3rd party health monitoring app to read the messages file. Since messages is a system file and is owned by root the app cannot read the file. I don't want to run the app as root so how should I allow the app to read the file. The read function is actually built...

LEARN ABOUT CENTOS

console.handlers

console.handlers(5)					   System Administrator's Manual				       console.handlers(5)

NAME

       console.handlers - file specifying handlers of console lock and unlock events

DESCRIPTION

       /etc/security/console.handlers determines which programs will be run when an user obtains the console lock at login time, and when the user
       loses it on log out. It is read by the pam_console module.

       The format is:

       handler-filename lock|unlock [flag ...]

       Where handler-filename is a name of the executable to be run, lock or unlock specifies on which event it should be run, and  flags  specify
       how should pam_console call it.

       Additionally there should be a line which specifies glob patterns of console devices.

       The format of this line is: console-name consoledevs regex [regex ...]

       Where  console-name is a name of the console class - currently ignored - and regexes are regular expression patterns which specify the name
       of the tty device.  Only the first such line is consulted.

FLAGS

       logfail
	      The pam_console module should log error to the system log if the return value of the handler is not zero or if the handler  can  not
	      be executed.

       wait   The pam_console should wait for the handler to exit before continuing.

       setuid The handler should be executed with uid/gid of the user which obtained the console lock.

       tty    The handler will get a tty name as obtained from PAM as a parameter.

       user   The handler will get an user name as obtained from PAM as a parameter.

       Anything else will be added directly as a parameter to the handler executable.

SEE ALSO

       pam_console(8)

AUTHOR

       Tomas Mraz <tmraz@redhat.com>

Red Hat 							     2005/3/18						       console.handlers(5)