I have a bash script as follows:
if [[ "$1" == "stop" ]]; then
echo "[$(date +'%d/%m/%Y %H:%M:%S:%s')]: Killing all active watchers" >> $LOG
kill -9 $(ps -ef | grep "processname1" | grep -v "grep" | grep -v "$$" | awk
'{print $2}' | xargs)
echo "[$(date +'%d/%m/%Y %H:%M:%S:%s')]: Killing all current processname2
processes" >> $LOG
kill -9 $(ps -ef | grep "processname2" | grep -v "grep" | awk '{print $2}' |
xargs)
exit 0
when i run 'x service stop', the following is outputted:
kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill
-l [sigspec]
Killed
How do i stop the kill usage being displayed? It is successfully killing the process, however the fact that the usage is displayed is causing AWS CodeDeploy to fail.
Thanks!
Adam, please note that this is really just a comment with formatting. Don't take this as a real answer to your question. Please focus on the constructive comments to your question.
In my mis-spent youth, I wrote this bash function to do the ps -ef | grep .... madness:
# ps-grep
psg() {
local -a patterns=()
(( $# == 0 )) && set -- $USER
for arg do
patterns+=("-e" "[${arg:0:1}]${arg:1}")
done
ps -ef | grep "${patterns[#]}"
}
using the knowledge that the pattern [p]rocessname will not match the string [p]rocessname
Related
I created this function to kill a process by partial name, put it in bash_profile, and executed it.
when I run it one command at a time manually, everything works.
but when I call the function, it fails with the output: "illegal process id"
function killServer() {
pid=$(ps -fe | grep '[p]rocessName' | awk '{print $2}')
if [[ -n $pid ]]; then
kill $pid
else
echo "Does not exist"
fi
}
output:
kill: illegal process id: i311821
running
ps -fe | grep '[p]rocessName'
gives:
1543721191 1947 1946 0 9:12AM ?? 0:46.76 ../../jdk/bin/java -server -da -XX:PermSize=256m Xrunjdwp:transport=dt_socket,address=8000,suspend=n,server=y -DMonitorDisabled -Xms2048m -Xmx2048m -Dwrapper.port=32000 -com.XXX.YYY.server.util.Main -b 0.0.0.0 -c default
what is the reason for that?
found the problem:
a space after $2 was missing. after the fix, it works:
ps -ef | grep "[X]XX" | grep -v grep | awk '{print $2 }' | xargs kill -9
The script:
#!/bin/bash
SERVICE="$1"
RESULT=`ps -a | sed -n /${SERVICE}/p`
MEM=$(ps aux | sort -rk +4 | grep $1 | grep -v grep | awk '{print $4}' | awk 'NR == 1')
if [ "${RESULT:-null}" = null ]; then
echo "$1 is NOT running"
else
echo "$MEM"
fi
if [ "$MEM" -ge 1 ]; then
mailx -s "Alert: server needs to be checked" me#admins.com
fi
The problem with the ps output piped to sed is even if no process is running it finds itself:
ps aux | sed -n /nfdump/p
root 30724 0.0 0.0 105252 884 pts/1 S+ 14:16 0:00 sed -n /process/p
and them my script bypasses the expected result of "service is not running" and goes straight to echo'ing $MEM, which in this case will be 0.0. Does sed have a grep -v grep eqivalent to get itself out of the way?
Let me add one more example in addition to my comments above. Sed has indeed an equivalent to grep -v: You can negate a match with /RE/! (append a ! to the regex) thus you can try:
ps aux | sed -n '/sed/!{ /nfdump/ p;}'
Here the part inside { ... } is only applied to lines not matching sed.
For the record: there is a command pgrep that can replace your ps sed pipeline, see pgrep in Wikipedia or its manpage.
Try :
ps aux | sed -n '/[n]fdump/p'
or :
ps aux | grep '[n]fdump'
The regex won't be find in the processes list
I'm getting following error while I try to capture process ids in my shell script.....
$bash ./restartjbossserver.sh
./restartjbossserver.sh: line 10: `i=$(ps -ef | grep "jboss" | grep -v "grep" | awk '{print $2}')': not a valid identifier
And this is my script....
for i=$(ps -ef | grep "jboss" | grep -v "grep" | awk '{print $2}')
do
echo $i
if [ $i != NULL ]
then
echo "Killing JBos Process.."
kill -9 $i
echo "Killed Joss Process..."
fi
done
sleep 10s
echo "Deleting JBoss Cache..."
rm -rf /home/cbsmsblapp/opt/EAP-6.3.0/jboss-eap-6.3/domain/tmp/*
echo " Deleted JBoss Cache..."
sleep 10s
nohup /home/cbsmsblapp/opt/EAP-6.3.0/jboss-eap-6.3/bin/domain.sh & >nohup.out
The syntax for iterating over a list is
for i in $( ...
not
for i=$( ...
Have a look at the pkill and pgrep commands. You could just pkill jboss.
I am trying to write a script to find a reverse SSH PID and kill it if present. I am stuck on "awk" as it gives error. below is the script:
a=('ps -aef | grep "ssh -fN" | grep -v grep | awk '{ print $2 }'')
if [ -n "$a" ]
then
echo "String \"$a\" is not null."
kill -9 "$a"
fi
I commented out if, then, kill and fi lines to debug the script. I get following error:
String "ps -aef | grep "ssh -fN" | grep -v grep | awk {" is not null.
I believe parenthesis for awk is creating the problem and I am unable to get a workaround for this. On Command line, this works perfectly and returns the correct PID.
ps -aef | grep "ssh -fN" | grep -v grep | (awk '{ print $2 }'
Once the PID is passed on to variable "a", I need to issue kill command. OS is Centos 6.4
P.S: I am not fluent on scripting but trying to achieve an objective. Help will be highly appreciated!
There are multiple problems with your script.
You need command substitution to store the output of ps pipeline into an array.
You need to check for the number of elements in the array.
Refer to the array instead of the variable.
The following might work for you:
pids=( $(ps -ef | grep '[s]sh -fN' | awk '{print $2}') )
if [ "${#pids[#]}" -gt 0 ]; then
kill -9 "${pids[#]}";
fi
First, if you have grep and then awk, you can get rid of the greps:
ps -aef | grep "ssh -fN" | grep -v grep | awk '{ print $2 }'
ps -aef |awk ' { if ( ($0 ~ /ssh -FN/) && (! $0 ~ /grep/) ) { print $2 } }'
However, instead of using ps, use pgrep.
pgrep -f "ssh -[fN][fN]" # Will match against either 'ssh -fN' or 'ssh -Nf'
There is even a pkill that will do the entire command for you:
pkill -f "ssh -[fN][fN]"
That will find all of the processes that match that particular string and kill them (if they exist).
I need to search the string "-Xms" from the below code:
cat | ps -eaf|grep $LOGNAME | while read LINE
do
if [[ grep LINE = "-Xms" ]]; then
pid=$(echo $LINE | awk '{print $2}')
#echo $pid
kill -9 $pid
fi
:
done
But this code does not work on AIX. It works fine on Linux.
Please help.
I made small changes in the script like making a variable for storing return of grep.
Try this
ps -aef|grep $LOGNAME | while read LINE
do
PAT=`grep "\-Xms" $LINE`
if [ "$PAT" != "" ]; then
pid=$(echo $LINE | awk '{print $2}')
#echo $pid
#kill -9 $pid
fi
done
i did not test though.
your complete loop can be replaced with :
ps -eaf | grep $LOGNAME| grep "-Xms"|awk '{print $2}'|xargs kill -9
coming to searching for substring:
cat | ps -eaf|grep $LOGNAME |grep "-Xms" while read LINE
do
pid=$(echo $LINE | awk '{print $2}')
kill -9 $pid
done