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Formatting the output of ps -eo command

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Top Forums Shell Programming and Scripting Formatting the output of ps -eo command
# 15  
Old 08-02-2012
yes we are, right this is the script as it stands, it sends an email now but only with the content I have echoed in before the awk command.

Code:
echo 'PRI    PID     USER    NICE    %CPU    COMMAND' >> /export/home/tjmoore/fi
le2
#
if ps -eo pri,pid,user,nice,pcpu,comm |awk 'BEGIN {found=1} {if($5>=5) {$1=$1; f
ound=0; print}} END {exit found}' OFS=$'\t'; >> /export/home/tjmoore/file2 2>/de
v/null
#
then /usr/local/bds/mailsend.s mailx "Process has surpassed 5% threshold" <email address> <email address> /export/home/tjmoore/file2 2&1>/dev/n
ull
fi
#

the actual ps ... output is displayed on the terminal screen and doesnt append to the file which I tell it to
# 16  
Old 08-02-2012
As stated before, you need to append a ; to the if statement, i.e. right before the then statement; I'm surprised there was no error msg.
Does the OFS=$'\t' do what it's meant to do, assign the <TAB> char you need in the output?

Just for the current, don't suppress errors, 2>/dev/null, let it show its errors!
This User Gave Thanks to RudiC For This Post:
02JayJay02
# 17  
Old 08-03-2012
Im away from the system now Ill try this tomorrow, the tab output is working great now yeah

---------- Post updated 03-08-12 at 04:31 AM ---------- Previous update was 02-08-12 at 10:03 AM ----------

Looks like it is all working perfectly now! Smilie

cheers RudiC, I appreciate all the help you have provided

Finishing Script:

Code:
#!/bin/bash
#Send process which has exceeded 5%
#
#
echo 'The below is a list of processes which have exceeded the 5% threshold' > /
export/home/tjmoore/file2
#
echo ' ' >> /export/home/tjmoore/file2
#
echo 'PRI         PID         USER      NICE    %CPU    TIME     COMMAND' >> /ex
port/home/tjmoore/file2
#
if ps -eo pri,pid,user,nice,pcpu,time,comm |awk 'BEGIN {found=1} {if($5>=5) {$1=
$1; found=0; print}} END {exit found}' OFS=$'\t' >> /export/home/tjmoore/file2;
then /usr/local/bds/mailsend.s mailx "Process has surpassed 5% threshold" <email address> <email address> /export/home/tjmoore/file2 > 2&1>/dev
/null
fi
#

# 18  
Old 08-03-2012
I love it when a plan comes together
This User Gave Thanks to RudiC For This Post:
02JayJay02
# 19  
Old 08-08-2012
hi, just looking at th script so I can learn and understand every part of it for future scripting, what does the
Code:
{found-1}

and
Code:
exit found

do?
# 20  
Old 08-08-2012
In your post #11 you said you found exit [ expr ] in your awk's man page. That's exactly what we are using here: exit found conveys awk's success or failure as its "exit status" to the shell for evaluation in the if construct, 0 representing success and 1 representing failure.
BEGIN {found=1} initialises the status to failure, but any line with percentage ($5) matching or exceeding 5 will set {found=0}, maybe repeatedly, so the conveying works.
This User Gave Thanks to RudiC For This Post:
02JayJay02
# 21  
Old 08-09-2012
great cheers I understand that now Smilie

another one from an earlier post

Quote:
And yes, $1=$1 means field 1 = field 1, which is a dummy assignment that causes $0 to be modified and thus recreated. If $0 is not recreated, the <TAB> OFS will not be inserted.
Why does the $0 have to be recreated for the <TAB> OFS to work ?
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