crond init.d and CPU script

[prahjister]

I been working on a crond/init.d like installer for about a week and a cpu script so we dont have to run a set cpu type application....going to be doing a lot of testing before posting...tweaking frequency now....so far so good....im able to hit 1.6 more often....so far i have only come up with running my cpu script and doing a daily reboot @ 4am.....anyone have any advice or suggestions....

Crond is a service that allows you to schedule starting applications/scripts etc.

[prahjister]

#!/system/bin/sh

# Create symbolic link
mount -o remount,rw rootfs /
ln -s /system/bin/ /bin
mount -o remount,rw /system


# Setting up files. /data/cron/ is your crond file. Look at crontest file to make sure working.
mkdir /data/cron
echo "root:x:0:0::/data/cron:/system/bin/bash" > /system/etc/passwd
echo '* * * * * echo "New line" >> /data/cron/crontest' > /data/cron/root
touch /system/etc/group
touch /system/etc/shadow


#Setting up cron to start every reboot
echo "#!/system/bin/sh" >> /system/etc/install-recovery.sh
echo "mount -o remount,rw rootfs /" >> /system/etc/install-recovery.sh
echo "ln -s /system/bin/ /bin" >> /system/etc/install-recovery.sh
echo "mount -o remount,rw /system" >> /system/etc/install-recovery.sh
echo "sleep 15s" >> /system/etc/install-recovery.sh
echo "busybox crond -c /data/cron" >> /system/etc/install-recovery.sh
echo "#*************Place scripts to start after boot below**************" >> /system/etc/install-recovery.sh
echo "sh /data/cron/cpu" >> /system/etc/install-recovery.sh


#Building cpu script
echo "#!/system/bin/sh" >> /data/cron/cpu
echo 'echo "interactive" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor' >> /data/cron/cpu
echo 'echo "interactive" > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor' >> /data/cron/cpu
echo 'echo "1608000" > /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq' >> /data/cron/cpu


# Setting perminssions
chmod 755 /system/etc/install-recovery.sh
chmod 755 /data/cron/cpu


#starting crond & cpu script
busybox crond -c /data/cron
sh /data/cron/cpu

[prahjister]

PLEASE READ WHOLE POST

Posted above is the script..copy and paste to a file. then open terminal emulator and go to directory then sh xxx.

This creates several files...2 that are important are /system/etc/install-recovery.sh and /data/cron/root.

install-recovery will act like your init.d....any commands in it will be ran at boot

root is your crond file.. you can schedule commands and scripts to run....times are UTC....so when setting up offset appropriatly. There is a sample crond job that runs every minute and puts a new line in /data/cron/crontest file....this is just to prove that it is working....Remove this or you will eventually fill up your space if you dont.

I was trying to do a reboot @ 4am every day but doesnt seem to work. It should look like

0 4 * * * reboot

Edit Put a "0 0 * * * /system/bin/date >> /data/cron/date" in the root file and let it run for 24 hours. Then look at time in the date file to figure out adjustment.

One caveat is that when you go into recovery and reboot it is going to say something about intalling recovery.....hit no or it will break all of this....if you happen to hit yes...run a chmod 755 on your install-recovery.sh file

Finally this installs a script called cpu that runs every reboot...it sets cpu to interactive and highspeed frequency to 1608000...What this does basically is give your cpu 2 running states slow and wide open....gives the benefit of performance and get 1.6ghz but when you are not using go to low power state. You can addjust to suite your needs or set another govenor...I dont have to run set cpu now. Check the folders out there are several files that can be set...

I also had an issue with my webcam that i had to reset everytime i rebooted...so i put that in my install-recovery file...bam another program i can uninstall.

[phinc]

Nice work man! Does the governor change on boot work? I once tried to to in with init.d but i counldn't get it to work (but i am a noob at sh scripts ).

[prahjister]

Nice work man! Does the governor change on boot work? I once tried to to in with init.d but i counldn't get it to work (but i am a noob at sh scripts ).

yes it works well....

[leolas]

Re: crond init.d and CPU script

Thanks, good work!

leolas
sent from my phone.

[daemonium]

awesome! good work!

[prahjister]

Please see edit on third post to figure out ust offset.