#!/bin/bash
# ==============================================================
# CPU limit daemon - set PID's max. percentage CPU consumptions
# ==============================================================
# Variables
CPU_LIMIT=20 # Maximum percentage CPU consumption by each PID
DAEMON_INTERVAL=3 # Daemon check interval
while sleep $DAEMON_INTERVAL
do
NEW_PIDS=$(top -b -n1 | gawk 'NR>6 && $9>CPU_LIMIT {print $1}' CPU_LIMIT=$CPU_LIMIT) # Violating PIDs
LIMITED_PIDS=$(ps -eo args | gawk '$1=="cpulimit" {print $3}') # Already limited PIDs
QUEUE_PIDS=$(diff <(echo "$NEW_PIDS") <(echo "$LIMITED_PIDS") | grep '^<' | sed 's/< //g') # PIDs in queue
for i in $QUEUE_PIDS
do
cpulimit -p $i -l $CPU_LIMIT -z & # Limit new violating processes
done
done
ERROR:
sh cpulimit.sh(' cpulimit_daemon.sh: command substitution: line 31: diff <(echo “$NEW_PIDS”) <(echo “$LIMITED_PIDS”) | grep ‘^<’ | sed ‘s/< //g’)’
On Ubuntu linux it worked.
But I used with “comm” command the script still error.
QUEUE_PIDS=$(comm -23 <(echo "$NEW_PIDS" | sort -u) <(echo "$LIMITED_PIDS" | sort -u) | grep -v "^$") # PIDs in queue
knurpht
January 27, 2012, 11:22am
#2
Weird. Linux is linux, I would say. Is the script exactly the same as the one used on Ubuntu?
Knurpht wrote:
Also, how does a 20 line script have an error in line 31 ?
DenverD
January 27, 2012, 12:23pm
#4
On 01/27/2012 12:08 PM, Dave Howorth wrote:
six unseen (in html/vBulletin) EOLs, maybe??
–openSUSE
Works for me on 11.4 and cpulimit from here: Index of /repositories/utilities/openSUSE_11.4
ETA: Ahhh … Seems like it matters how it is run:
~/bin/cpulimit.sh
it works.
If I run
sh ~/bin/cpulimit.sh
it doesn’t work. I get similar errors as shown in the OP, only it is line 15.
So drop the ‘sh’.
knurpht
January 27, 2012, 3:37pm
#6
This is what I did, basically not much different than Lord_Elmsworth:
moved cpulimit.sh to ~/bin
chmod 755 ~/bin/cpulimit.sh
ran it from my homedir
Then I got this, when running it with root permissions
su -c bin/cpulimit.sh
Wachtwoord:
Process 2174 detected
sled1983:
#!/bin/bash
# ==============================================================
# CPU limit daemon - set PID's max. percentage CPU consumptions
# ==============================================================
# Variables
CPU_LIMIT=20 # Maximum percentage CPU consumption by each PID
DAEMON_INTERVAL=3 # Daemon check interval
while sleep $DAEMON_INTERVAL
do
NEW_PIDS=$(top -b -n1 | gawk 'NR>6 && $9>CPU_LIMIT {print $1}' CPU_LIMIT=$CPU_LIMIT) # Violating PIDs
LIMITED_PIDS=$(ps -eo args | gawk '$1=="cpulimit" {print $3}') # Already limited PIDs
QUEUE_PIDS=$(diff <(echo "$NEW_PIDS") <(echo "$LIMITED_PIDS") | grep '^<' | sed 's/< //g') # PIDs in queue
for i in $QUEUE_PIDS
do
cpulimit -p $i -l $CPU_LIMIT -z & # Limit new violating processes
done
done
ERROR:
sh cpulimit.sh(' cpulimit_daemon.sh: command substitution: line 31: diff <(echo “$NEW_PIDS”) <(echo “$LIMITED_PIDS”) | grep ‘^<’ | sed ‘s/< //g’)’
On Ubuntu linux it worked.
But I used with “comm” command the script still error.
QUEUE_PIDS=$(comm -23 <(echo "$NEW_PIDS" | sort -u) <(echo "$LIMITED_PIDS" | sort -u) | grep -v "^$") # PIDs in queue
openSUSE 12, SUSE Enterprise 11 SP1
chmod 755 cpulimit.sh
./cpulimit.sh
It works.
sh cpulimit.sh
it doesn’t work.
**ERROR: **(' cpulimit_daemon.sh: command substitution: line 31: diff <(echo “$NEW_PIDS”) <(echo “$LIMITED_PIDS”) | grep ‘^<’ | sed ‘s/< //g’)’
sled1983 wrote:
I’ll ask the obvious question - what shell are you running in each case?
Am 30.01.2012 12:09, schrieb Dave Howorth:
–