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Insert output from a file to beginning of line with sed

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# 1  
Old 10-01-2012
Insert output from a file to beginning of line with sed
Hi

I've been trying to search but couldn't quite get the answer I was looking for.

I have a a file that's like this
Code:
Time, 9/1/12
0:00, 1033
0:10, 1044
...
23:50, 1050

How do I make it so the file will be like this?
Code:
9/1/12, 0:00, 1033
9/1/12, 0:10, 1044
...
9/1/12, 23:50, 1050

I tried doing something like this and variations of this, but can't seem to get it to work.
Code:
  for n in {2..144}
   do
     DATETMP=`cat FILE |grep "Time" |awk -F ',' '{print $'$n'}' |sed 's/\//\/\//g'`
    cat FILE |egrep -v "Time" |awk -F ',' '{print$1 "," $'$n'}' |sed -e 's/^/'$DATETMP'/g'
  done

It doesn't seem that $DATETMP is inserting into the beginning of the line.

Any help is extremely appreciated.

Thank you.
Last edited by Franklin52; 10-02-2012 at 04:02 AM.. Reason: Please use code tags for data and code samples
# 2  
Old 10-01-2012
Code:
awk -F "," 'NR==1{x=$2;next} {sub("^",x",")}1' input_file

This User Gave Thanks to msabhi For This Post:
diesel88
# 3  
Old 10-01-2012
try..

Code:
 
awk 'NR>1{print "9/1/12,"$0}' filename

# 4  
Old 10-01-2012
Code:
awk 'NR==1{TMP=$2;next}{$0=TMP", "$0}1' infile

# 5  
Old 10-01-2012
Thank you everyone for the help.

I'm one step closer to finishing the script.

---------- Post updated at 11:18 AM ---------- Previous update was at 11:05 AM ----------

Actually sorry, I spoke too soon. I should have explained a little more clear

My source file is more like this
Code:
Time, 9/1/11, 9/2/11 .. 9/30/11
0:00, 1033, 1031, .. 1035
0:10, 1044, 1045, .. 1046
...
23:50, 1050, 1051, .. 1052

How do I make it so the file will be like this?
Code:
9/1/11, 0:00, 1033
9/1/11, 0:10, 1044
...
9/1/11, 23:50, 1050
9/2/11, 0:00, 1031
9/2/11, 0:10, 1045
....
9/2/11, 23:50 1052
..
9/30/11, 00:00, 1050
9/30/11, 00:10, 1045
..
9/30/11, 23:50, 1052

I tried doing something like this,
Code:
i=0
while [ $i -lt ${#TRACK[*]} ]
 do

  for n in {2..144}
   do
    cat $WORKING/${TRACK[i]}.csv |awk -F ',' '{print$1 "," $'$n'}' > tmp00
    awk -F "," 'NR==1{x=$'$n';next} {sub("^",x",")}1' tmp00 
  done

 i=$(( $i + 1 ))
done

I'm getting good results with the first date (sept 1, 11), however once it's sept 2, 11, I get only a blank at the front of the line.
e.g.,
Code:
09/01/11,23:20,1551
09/01/11,23:30,1556
09/01/11,23:40,1506
09/01/11,23:50,1480
,0:00,1455
,0:10,1401
,0:20,1382
,0:30,1309

How do I get the $n variable into awk -F "," 'NR==1{x=$'$n';next} {sub("^",x",")}1' properly?

Any help is appreciated.

Thank you

---------- Post updated at 11:49 AM ---------- Previous update was at 11:18 AM ----------

Nevermind, I figured it out.

Thank you all for your help.
Last edited by Franklin52; 10-02-2012 at 04:04 AM.. Reason: Code tags
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