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# 1  
Old 08-28-2013
Linux Need help with regex

i have some giga texts data, samples data below


i want to extract the data for each date (column no.2) and stored to separate files, any line contain 7282012 will stored to 7282012.txt

sorry for my bad English
# 2  
Old 08-28-2013
You may try something like this:
awk -F, '{ print > ($2 ".txt") }' infile

Note that some awk implementations (or some system settings) could limit the number of concurrently open files.

Last edited by radoulov; 08-28-2013 at 01:04 PM..
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# 3  
Old 08-28-2013
Originally Posted by radoulov
You may try something like this:
awk -F, '{ print > ($2 ".txt") }' infile

Note that some awk implementations (or some system settings) could limit the number of concurrently open files, in that case you could use something like this:

awk -F, '{
  fn[f = $1 ".txt"]++ || c++ 
  if (c >= l) {
    for (F in fn) close(F)
    c = x
  print >> f
  }' l=10 infile

Set l to the desired value (the # of open files).
thanks it's working well and also very fast. never think it's can be done by single line awk. i want to know also how to calculate the number of record base on value on column 1 and 2 , so the data after i extract is


the output that i want is

thanks in adv
# 4  
Old 08-28-2013
awk -F, 'END {
  for (e in cnt)
    print e, cnt[e]
{ cnt[$1 FS $2]++ }
 ' OFS=, infile

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