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Shell script emailing issue

 
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# 1  
Old 03-06-2012
Shell script emailing issue
Hi,

Im writing a shell script:

Code:
#!/bin/bash
#Send process which has exceeded 25%
#
echo 'pri pid user nice pcpu command' > /export/home/tjmoore/file2
#
if ps -eo pri,pid,user,nice,pcpu,comm | awk '{if($5 >= 25)print $0}' >> /export/home/tjmoore/file2 2>/dev/null
#
#
#
then /usr/local/bds/mailsend.s mailx "Process has surpassed 25% threshold" [email adress] [email address] /export/home/tjmoore/file2 2&1>/dev/null
fi

my issue is that it sends an email even if there is no process exceeding the threshold, is there anyway I can stop this from happening possibly by using a grep along with a sed command or grepping for a range of numbers in the file before it is sent?
Last edited by methyl; 03-06-2012 at 01:32 PM.. Reason: please use code tags ; correct paste errors
# 2  
Old 03-06-2012
Try breaking the script into stages.
Something like this (untested).

Code:
#!/bin/bash
#Send process which has exceeded 25%
#
echo 'pri pid user nice pcpu command' > /export/home/tjmoore/file2
ps -eo pri,pid,user,nice,pcpu,comm | awk '{if($5 >= 25)print $0}' >> /export/home/tjmoore/ps_file2 2>/dev/null
#
if [ -s /export/home/tjmoore/ps_file2 ]
then
    cat /export/home/tjmoore/ps_file2 >> /export/home/tjmoore/file2
    /usr/local/bds/mailsend.s mailx "Process has surpassed 25% threshold" [email adress] [email address] /export/home/tjmoore/file2 2&1>/dev/null
fi

 
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