Question how big can nvram rc_startup be and a tip

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mQQm
DD-WRT Novice


Joined: 09 Jun 2006
Posts: 2
PostPosted: Fri Jun 09, 2006 22:59    Post subject: Question how big can nvram rc_startup be and a tip Reply with quote
Hi hello everyone,

As title, is the rc_startup variable a fixed size or limited only by free memory?

And here's the tip if anyone is interested, probably a dupe. I'm running the std version of the firmware so I don't seem to get any jffs storage for running scripts. I got the ssh_users.sh script running from boot by adding the following to rc_startup (hence I'd like to know how big it can be).

Code:

echo '#!/bin/sh' > /tmp/ssh.sh
echo 'led=2' >> /tmp/ssh.sh
echo 'interval=5' >> /tmp/ssh.sh
echo 'on=0' >> /tmp/ssh.sh
echo '/sbin/gpio enable 2' >> /tmp/ssh.sh
echo 'while sleep 5' >> /tmp/ssh.sh
echo 'do' >> /tmp/ssh.sh
echo -n 'users=$(/bin/netstat -n | /usr/bin/awk ' >> /tmp/ssh.sh
echo -n "'" >> /tmp/ssh.sh
echo -n '$4~/:22$/ {++x}; END {print x+0}' >> /tmp/ssh.sh
echo -n "'" >> /tmp/ssh.sh
echo ')' >> /tmp/ssh.sh
echo '   if [ "$users" -gt 0 ]; then' >> /tmp/ssh.sh
echo '      if [ $on -eq 0 ]; then' >> /tmp/ssh.sh
echo '          /sbin/gpio disable $led' >> /tmp/ssh.sh
echo '          on=1' >> /tmp/ssh.sh
echo '      fi' >> /tmp/ssh.sh
echo '   else' >> /tmp/ssh.sh
echo '      if [ $on -eq 1 ]; then' >> /tmp/ssh.sh
echo '          /sbin/gpio enable $led' >> /tmp/ssh.sh
echo '          on=0' >> /tmp/ssh.sh
echo '      fi' >> /tmp/ssh.sh
echo '   fi' >> /tmp/ssh.sh
echo 'done' >> /tmp/ssh.sh
chmod 700 /etc/ssh.sh
sh /etc/ssh.sh &


Dave.
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maxzerker
DD-WRT Novice


Joined: 09 Jun 2006
Posts: 25
PostPosted: Sat Jun 10, 2006 2:03    Post subject: Re: Question how big can nvram rc_startup be and a tip Reply with quote
I don't know but i use this code for start up
and it works fine.

Code:
if [ $(ps | grep grep -v | grep cpuload.sh -c) -eq 0 ];then
# --- CPULOAD.SH --- BEGIN
echo "#!/bin/sh

amber_on=\"gpio disable 3\"
amber_off=\"gpio enable 3\"
white_on=\"gpio disable 2\"
white_off=\"gpio enable 2\"

load4=150
load3=100
load2=50
load1=0

delay4=50000
delay3=100000
delay2=150000
delay1=200000

while sleep 1
do
load=\$(cat /proc/loadavg | cut -d \" \" -f1 | tr -d \".\")

if [ \$load -gt \$load4 ];then
\$white_on
\$amber_on
usleep \$delay4
\$amber_off
usleep \$delay4
\$amber_on
usleep \$delay4
\$amber_off
usleep \$delay4
\$amber_on
usleep \$delay4
\$amber_off
\$white_off

elif [ \$load -gt \$load3 ];then
\$white_off

\$amber_on
usleep \$delay3
\$amber_off
usleep \$delay3
\$amber_on
usleep \$delay3
\$amber_off
usleep \$delay3
\$amber_on
usleep \$delay3
\$amber_off

elif [ \$load -gt \$load2 ];then
\$amber_on
\$white_on
usleep \$delay2
\$amber_off
\$white_off
usleep \$delay2
\$amber_on
\$white_on
usleep \$delay2
\$amber_off
\$white_off
usleep \$delay2
\$amber_on
\$white_on
usleep \$delay2
\$amber_off
\$white_off

elif [ \$load -gt \$load1 ];then
\$amber_off

\$white_on
usleep \$delay1
\$white_off
usleep \$delay1
\$white_on
usleep \$delay1
\$white_off
usleep \$delay1
\$white_on
usleep \$delay1
\$white_off

fi
unset \$load
done" > /tmp/cpuload.sh
# --- CPULOAD --- END
chmod +x /tmp/cpuload.sh
/tmp/cpuload.sh &
fi

if [ $(ps | grep grep -v | grep ddnsfix.sh -c) -eq 0 ];then
# --- DDNSFIX.SH --- BEGIN
echo "#!/bin/sh

delay=5
retry=3

while sleep \$delay
do
ddns_opt=`nvram get ddns_enable`
if [ \$ddns_opt -eq 1 ];then
ddns_ip=\$(cat /tmp/ddns.cache | cut -d \",\" -f2)
wan_ip=`nvram get wan_ipaddr`
if [ \${wan_ip:-not_exist} != \${ddns_ip:-not_exist} ];then
ez-ipupdate -r \$retry -b /tmp/ddns.cache -a \$wan_ip -c /tmp/ddns.conf
delay=30
else
delay=300
fi
else
exit 0
fi
done" > /tmp/ddnsfix.sh
# --- DDNSFIX.SH --- END
chmod +x /tmp/ddnsfix.sh
/tmp/ddnsfix.sh &
fi
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