Start-up script

After a linuxCNC 2.7.15 update my start-up script is on the blink! The intention is to disable the Network and Sound Then start linuxCNC. After closing LinuxCNC I enable the Network and Sound, and log the start, stop and elapse times. What's quit is the ability to turn the Network OFF and ON. This is not really a linuxCNC question but the solution might be of interest to our subscribers.

There are (LOG, ...) commands in the ngc file to capture the odd parameter e.g. spindle speed. The mawk command captures the latest ngc file from .axis_preferences. It then builds the *.log filename to append the time info.

#!/bin/bash
# log file for date stamps and elapse time
# gnc file may append commentary and data using (LOG, ...)
echo "run linuxcnc after disabling audio and ethernet"

#sudo /etc/init.d/network-manager stop
sudo service network-manager stop
amixer set Master mute
start=$(date)

linuxcnc /home/cnc/linuxcnc/configs/EAI07TPCPWM/EAI07TPCPWM.ini
sleep 1s

stop=$(date)
#sudo /etc/init.d/network-manager start
sudo service network-manager start
amixer set Master unmute
# read ngc file from axis log, 2nd entry using \' as break
ngcf=$(mawk -F\' '/recent/ {print $2}' /home/cnc/.axis_preferences)
logf=$(echo $ngcf | cut -d. -f 1)
ext=".log"
logf=$logf$ext
echo "Start Time:" $start >> $logf
echo "End Time: " $stop >> $logf
#33 pulled this gem off the web from Bill Gale
duration=$(date -ud@$(($(date -ud"$stop" +%s)-$(date -ud"$start" +%s))) +%T)
echo "Duration: " $duration >> $logf

David Whiteley

you are better off to get the mashine its own system
no matter it workes the way you did it
the CAD CAM system shoudt not run on a realtime kernel

bbsr_5a wrote:

the CAD CAM system shoudt not run on a realtime kernel

Why ? What is the issue ?

I just started playing with my ML150-G5 Twin Quad Core Xeons @ 3.0GHz and on a non RT kernel I was getting "NMI watchdog: BUG: soft lockup - CPU#X stuck for XXs!"
Went to a RT_PREEMPT and those issues disappeared......anyway nothing to do with linuxcnc but kinda interesting.
The 8 cores are great for building kernel packages, 26 minutes from start to having debs built, not bad for a box that owes me AUD $50 (that includes getting a pair of E5450 CPUs & cooler, 16GB RAM and 128MB Nvidia PCI card (yes PCI))....those times are with an old mechanical drive that's not the fastest. Runs quiet for what it is, but sounds like a jet taking off until it's done it's start up thing. Shame it wont work with 16x PCIe cards...the Gen 6s will.

But yeah when I boot into Mint 19.2 it's always a real time kernel.

Some progress in that I can now run 'sudo ./runcnc.sh' from a Terminal, it will ask for my Password, turn OFF Network & Sound, run linuxCNC, and when I Quit linuxCNC it enables Network & Sound.
I used 'sudo chown root:root runcnc.sh' and chmod u+s runcnc.sh'. I have even tried the former on the Desktop link to runcnc.sh but this does not disable the Network nor does it ask for a password.
I've appended a typical log to the end of the script. i.e. some run parameters using (LOG, .....) and the three time stamps.