Printing a particular column using SED

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# 1  
Old 09-20-2011
Printing a particular column using SED


i want to display only the particular column using SED command.

For example,

ps -ef|grep [b]ash |sed -n '1p'|cut -d ' ' -f2

this gives 29067
ps -ef|grep [b]ash |sed -n '1p'|awk '{print $2}'

this also gives the same
 in the same way i need the solution using sed.

Please help me
# 2  
Old 09-20-2011
Hi, using sed, instead of
sed -n '1p'|awk '{print $2}'

you could use:
sed 's/[^ ]* *//;s/ .*//;q'

This User Gave Thanks to Scrutinizer For This Post:
# 3  
Old 09-20-2011
bash-3.00$ echo "1 2 3 4" | sed 's/.* \(.* \).* .*/\1/'
bash-3.00$ echo "A B C D" | sed 's/.* \(.* \).* .*/\1/'

# 4  
Old 09-20-2011
Thanks !! It Works fine..
# 5  
Old 09-20-2011
Originally Posted by pandeesh
i want to display only the particular column using SED command.
I'm curious. Why must you use sed? This task is tailor-made for AWK:
awk 'NR==1 {print $2; exit}'

You could also get rid of the grep:
awk '/[b]ash/ {print $2; exit}'

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