I need part of my script to be able to loop, check for processes running and if they aren't running, start them. It needs to loop 5 times, do a check each time, and make sure a process starts, and if its running; skip it.
I've worked with loops and checking for processes before, but this one has me stumped.
Last edited by jeffs42885; 12-16-2010 at 10:54 AM..
now=$(date + %u%H)
for i in 1 2 3 4 5
do
process=$(ps -ef | grep process | awk '{ print $2}')
if [ -n "$process" ]
then
process1=$(ps -ef | grep process1 | awk '{ print $2}')
if [ -n "$process1" ]
then
if [ $now -gt 100 ] || [ $now -lt 108] # If sunday between 12 and 8
cd /dir/startprocess1.sh
cd /dir/startprocess2.sh
cd /dir/startprocess3.sh
else
cd /dir/startprocess1.sh
cd /dir/startprocess2.sh
cd /dir/startprocess3.sh
startcustomprocess1.sh
startcustomprocess2.sh
fi
else
cd /home/dir/process1.sh
sleep 10
if [ $now -gt 100 ] || [ $now -lt 108] # If sunday between 12 and 8
cd /dir/startprocess1.sh
cd /dir/startprocess2.sh
cd /dir/startprocess3.sh
else
cd /dir/startprocess1.sh
cd /dir/startprocess2.sh
cd /dir/startprocess3.sh
startcustomprocess1.sh
startcustomprocess2.sh
fi
fi
else
mail -s "Process isnt running" me@email.com
sleep 15
fi
done
now=$(date +%u%H) # no space between + and what follows
---------- Post updated at 17:08 ---------- Previous update was at 16:50 ----------
Code:
cd /dir/startprocess1.sh
cd /dir/startprocess2.sh
cd /dir/startprocess3.sh
Im missing something here: Are you changing 3 time of directory (if so wht is the point?), or is there something missing ( cd; or cd dir1; startprocess1.sh)?
Hi Jeff,
provide me the processes that should run every day and put it in a file say file 1
and find the current that would compare the current processes alive and put the output 2 file say file 2
use diff command to find those processes not running .
and restart those process .
also to check for loops ,
if you require you can create another script which wuld run the above script with while condition and that condition which will always gets satisfied. say
Code:
#!/bin/bash
a=10
while [ "$a" -eq "10" ];
do
run the above script
sleep (put the min u want to check)
done
Last edited by Franklin52; 12-18-2010 at 10:54 AM..
Reason: Please indent your code and use code tags, thanks
You might have trouble with using ps & grep, because sometimes
Code:
ps -ef|grep something
will find a processes "grep something", so you can get spurious errors.
You would be safer using a regular expression in the grep, even if there is nothing to expand. Something like:-
Code:
ps -ef|grep somethin[g]
will never match the grep statement itself. Apart from that, you code looks okay, but it could be simplified. If I may suggest:
Code:
proc1=$(ps -ef | grep -c proc[1])
proc2=$(ps -ef | grep -c proc[2])
if [ $proc1 -eq 0 -o $proc2 -eq 0 ]
then
....whatever....
fi
Of course, if you logic is that if neither process is running, you would want an AND condition, so a -a flag in the if statement. Of course, if that is the case, you can save some processing by combining the first two lines, so:
Code:
procs=$(ps -ef | egrep -c "proc[12]")
if [ $proc1 -eq 0 -o $proc2 -eq 0 ]
then
....whatever....
fi
I hope that this is useful, but if i have missed the point, please write back and hopefully I or someone else will correct it.
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/tmp$ l ?10
-rw-rw-r-- 1 moss group 0 Apr 19 11:22 N100
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