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Old 02-24-2009, 10:48 PM   #1
seefor
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Registered: Mar 2006
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Using sed in a shell script to add date and time


No clue if I'm doing this right, but what I'm trying to accomplish is add the current date and time to each line of the output.

Code:
#!/bin/bash
today=date +"%D"
hour=date +"%T"
for y in 205 206 207 208
do
COUNT=1
while [ $COUNT -lt 253 ]; do
snmpget -v 2c -Ovq -r 0 -c public 1.1.$y.$COUNT 1.3.6.1.4.1.9986.3.5.2.1.3.0 SNMPv2-SMI::enterprises.9986.3.5.2.6.2.2.5.4.1.2.1.1.1.1 SNMPv2-SMI::enterprises.9986.3.5.2.6.2.2.5.2.1.2.1.1.1 1.3.6.1.4.1.9986.3.5.2.6.2.2.5.1.1.17.1.1 1.3.6.1.4.1.9986.3.5.2.6.2.2.5.1.1.13.1.1 1.3.6.1.4.1.9986.3.5.2.6.2.2.5.1.1.14.1.1 1.3.6.1.4.1.9986.3.5.2.6.2.2.5.1.1.11.1.1 1.3.6.1.4.1.9986.3.5.2.6.2.2.5.1.1.12.1.1 1.3.6.1.4.1.9986.3.5.2.6.2.2.5.1.1.32.1.1 SNMPv2-SMI::enterprises.9986.3.5.2.3.2.0 | sed -n '1h;2,$H;${g;s/\n/;/g;p}' >> data.xls
	let COUNT=COUNT+1
done
done
sed -i 's/$/$today;$hour/' data.xls
I thought that
Code:
sed -i 's/$/$today;$hour/' test
would work but it only adds $today;$hour to the file.

Any help would be greatly appreciated

Thanks in advance.
SeeFor
 
Old 02-24-2009, 11:42 PM   #2
syg00
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If you use double quotes rather than single, sed will allow variable substitution. I doubt you'll like the result much more though.
Have you attempted to run that script ??? - I can't believe the assignments for today and hour will work.

And if you can get them to do what you appear to want, the slashes in the $today field will upset sed monumentally - try +%F instead maybe.
 
Old 02-24-2009, 11:42 PM   #3
slackert
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Registered: Dec 2007
Posts: 6

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See if this works for you.

Code:
#!/bin/bash

TODAY=$(date +%D)
HOUR=$(date +%T)

echo $TODAY
echo $HOUR

LINE="A line of text."

echo "LINE before sed: $LINE"

echo -n "LINE after sed: "

echo $LINE | sed -e "s|$| $TODAY $HOUR|"
 
Old 02-25-2009, 01:21 PM   #4
seefor
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Registered: Mar 2006
Posts: 34

Original Poster
Rep: Reputation: 15
Code:
#!/bin/bash

TODAY=$(date +%D)
HOUR=$(date +%T)


sed -i "s|$|$TODAY;$HOUR|" test

That worked like a charm

Thanks for all the help!
 
  


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