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# 1  
Old 11-30-2011
Print line number
how i need help again

i have file input.txt like this
Code:
48:20111008_20111122:31231|123|
78:20111008_20111122:435453|321112|

where 48 and 78 is line number 20111008_20111122 is a file and 31231|123| i want get in file, i am using manual awk for get that file like this
Code:
awk 'NR==48 {print;exit}' 20111008_20111122 >> filer
awk 'NR==78 {print;exit}' 20111008_20111122 >> filer

now what should i do if input.txt can looping using the awkSmilie please helpme

thx for your advice
# 2  
Old 11-30-2011
Just to print 2nd, 4th and 8th line using loop ..
Code:
$ for i in 2 4 8 ; do nawk -v lno="$i" 'NR==lno {print;exit}' infile; done

Last edited by jayan_jay; 11-30-2011 at 05:25 AM.. Reason: code corrected
# 3  
Old 11-30-2011
where 48 and 78 is line number 20111008_20111122 is a file and 31231|123| i want get in file

i dont understand the above highlighted one. Can you provide some sample input files and outputfiles.
# 4  
Old 11-30-2011
what is your desired output?
# 5  
Old 11-30-2011
Code:
while read line
do
 lno=$(echo $line | cut -d: -f1)
 fname=$(echo $line | cut -d: -f2)
 nawk -v lno="$lno" 'NR==lno{print;exit}' ${fname} >> filer
done < input.txt

This User Gave Thanks to itkamaraj For This Post:
zvtral
# 6  
Old 11-30-2011
Quote:
Originally Posted by jayan_jay
Try with this in loop ..
Code:
$ line=5
$ nawk -v lno="$line" 'NR==lno {print;exit}' infile

hlow @jayan
thx for your respon

bu its same with awk
Code:
awk 'NR==48 {print;exit}' 20111008_20111122 >> filer 
awk 'NR==78 {print;exit}' 20111008_20111122 >> filer

i just want to create shell
for this file
Code:
48:20111008_20111122:31231|123| 
78:20111008_20111122:435453|321112|

can do autolooping using awk like above meybe i think using for i or while
but i can't for substitution this variableSmilie

---------- Post updated at 04:37 AM ---------- Previous update was at 04:28 AM ----------

Quote:
Originally Posted by itkamaraj
where 48 and 78 is line number 20111008_20111122 is a file and 31231|123| i want get in file

i dont understand the above highlighted one. Can you provide some sample input files and outputfiles.
its index i create for get 31231|123| in big file so i must grep that with line number and the master(20111008_20111122) file

---------- Post updated at 04:42 AM ---------- Previous update was at 04:37 AM ----------

Quote:
Originally Posted by itkamaraj
Code:
while read line
do
 lno=$(echo $line | cut -d: -f1)
 fname=$(echo $line | cut -d: -f2)
 nawk -v lno="$lno" 'NR==lno{print;exit}' ${fname} >> filer
done < input.txt

that's i need thx @itkamaraj and @jayan_jay
# 7  
Old 11-30-2011
you can try this
Code:
# awk -F':' '{system("awk NR=="$1"{print} " $2)}' infile.txt >> filer

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