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Full Discussion: Pass an array to awk to sequentially look for a list of items in a file
Top Forums Shell Programming and Scripting Pass an array to awk to sequentially look for a list of items in a file Post 303033591 by LMHmedchem on Monday 8th of April 2019 10:04:57 PM
Old 04-08-2019
Quote:
Originally Posted by vgersh99
something to start with and improve upon...
assuming all the statistics are displayed in the same order in a file AND across the files:
awk -f lmh.awk myFiles where lmh.awk is:
Code:
FNR==1 {if (stat) print file OFS stat; file=FILENAME;stat=""; next}
!/statistics/{
   stat=(!stat)? $2:stat OFS $2
}
END {
   print file OFS stat
}

Thank you for the reply but I don't see in the above how my stats will be found in the huge stats output file when there is no notation of how to find what I am looking for. The stats I need are the second field of the first 5 lines following "train statistics", etc. I don't see how you can find what I am looking for without "train statistics" being in there somewhere. I could post an actual file if that would help.

This version works more or less. It prints the stats I need to the logfile.
Code:
#!/bin/sh

# name of file being processed
STATS_FILE=$1
# file we are writing to
LOGFILE=$1

# 4 sets of labels we are looking for
LABELS='train_statistics,test_statistics,validate_statistics,ival_statistics'

cat $STATS_FILE | \
awk -v var="$LABELS" '                 BEGIN { split(var,label_array,","); pos = 1 }
                                      F == 1 { line_array[++a_count] = $2; line_count++ }
                             line_count == 5 { for(i=1; i<=a_count; i++) print line_array[i];
                                               delete line_array;
                                               a_count = 0;  
                                               F = 0;
                                               line_count = 0;
                                               pos++ }
                       $0 ~ label_array[pos] { F = 1; line_count = 0; }
                     ' > $LOGFILE

I need to format the output a bit better and trap for if pos is larger that the size of label_array. I suspect that I also don't need both a_count and line_count.

Is there anything badly wrong with this approach?

LMHmedchem
 

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