UNIX for Advanced & Expert Users

Hi All,


What i am looking for:
i want to generate a dynamic system time for each and every data(line) which goes on generating data continously....

now i am using this script to append a time for dynamic data generation log file,

tail -f filename_error.log|awk -v var="$( date +%H":"%M":"%S" "%Y )" ' /parallel nursery GC/ || /GC/ { $0=$0 " " var } ; 1'
[INFO ][memory ] 7654.644: parallel nursery GC 1613483K->1441609K (2969600K), 58.004 ms 01:40:38 2007
[INFO ][memory ] 7672.245: parallel nursery GC 1636286K->1464021K (2969600K), 59.238 ms 01:40:38 2007
[INFO ][memory ] 7680.216: parallel nursery GC 1667206K->1494772K (2969600K), 58.330 ms 01:40:38 2007
[INFO ][memory ] 7691.249: parallel nursery GC 1691520K->1519101K (2969600K), 52.770 ms 01:40:38 2007
[INFO ][memory ] 7698.657: parallel nursery GC 1709864K->1537607K (2969600K), 52.452 ms 01:40:38 2007
[INFO ][memory ] 7705.461: parallel nursery GC 1760051K->1587293K (2969600K), 53.754 ms 01:40:38 2007
[INFO ][memory ] 7713.707:GC 1803076K->1630709K (2969600K), 52.372 ms 01:40:38 2007
[INFO ][memory ] 7705.461: parallel nursery GC 1760051K->1587293K (2969600K), 53.754 ms 01:40:38 2007



but i am looking for : a command that can generate the output as shown below .....

[INFO ][memory ] 7654.644: parallel nursery GC 1613483K->1441609K (2969600K), 58.004 ms 01:40:38 2007
[INFO ][memory ] 7672.245: parallel nursery GC 1636286K->1464021K (2969600K), 59.238 ms 01:40:45 2007
[INFO ][memory ] 7680.216: parallel nursery GC 1667206K->1494772K (2969600K), 58.330 ms 01:40:48 2007
[INFO ][memory ] 7691.249: parallel nursery GC 1691520K->1519101K (2969600K), 52.770 ms 01:40:52 2007
[INFO ][memory ] 7698.657: parallel nursery GC 1709864K->1537607K (2969600K), 52.452 ms 01:40:55 2007
[INFO ][memory ] 7705.461: parallel nursery GC 1760051K->1587293K (2969600K), 53.754 ms 01:40:59 2007
[INFO ][memory ] 7713.707:GC 1803076K->1630709K (2969600K), 52.372 ms 01:41:38 2007
[INFO ][memory ] 7705.461: parallel nursery GC 1760051K->1587293K (2969600K), 53.754 ms 01:41:42 2007



means the time should go on changing , i.e the output info as shown above should always append with a current system time ......

waiting for ur valuable suggestions.....eagerly

or



is there any another way to get the dynamic time generation to append for an dynamic data generation..................waiting for ur valuable suggestions........

Try this:

Code:

tail -f filename_error.log | while read LINE
do
   D=`date +%H":"%M":"%S" "%Y`
   echo "$LINE" | awk -v var="$D" ' /parallel nursery GC/ || /GC/ { $0=$0 " " var } ; 1'
done

Bye

Thanks Robotronic
its working fine and thanks a lot