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Full Discussion: awk to parse huge files
Top Forums Shell Programming and Scripting awk to parse huge files Post 302853075 by panyam on Friday 13th of September 2013 06:17:43 AM
Old 09-13-2013
Hi All,

Thanks for the reply.

I got the issue resolved myself and forgot to update here.

The logic I used is:

Code:
awk -F"|"  'BEGIN{ read the source file and store in array} { for each record in dest file search and replace it with source data ( stored in array ) and save it to a file }' source_file dest_files*.dat

 

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write_reading(3)						  Staden Package						  write_reading(3)

NAME
write_reading, fwrite_reading - Write a Read structure into a trace file. SYNOPSIS
#include <Read.h> int write_reading( char *filename, Read *read, int format); int fwrite_reading( FILE *fp, Read *read, int format); DESCRIPTION
These functions write a Read structure into a trace file. The principle format support is the SCF format. Although reading is supported for ABI and ALF, writing is not. Additionally, it is possible to write using the plain (old) staden format files or as Experiment files. In both these cases only the sequence component of the trace file will be written. When writing as an experiment file the QL, QR and SQ fields are generated from the Read structure. If we previously created the Read struc- ture from reading an experiment file then the original experiment file data is also written. Otherwise EN, ID, LN and LT lines are also generated. write_reading() writes a Read structure to the specified filename in the specified format. Formats available are TT_SCF, TT_PLNand TT_EXP. Specifying format TT_ANY will be treated as TT_SCF. fwrite_reading() writes a Read structure to the specified FILE pointer in the specified format. Apart from writing to FILE pointer instead of a filename, the function is identical to write_reading(). RETURN VALUES
On successful completion, the write_reading() and fwrite_reading() functions return 0. Otherwise these functions return -1. SEE ALSO
read_reading(3), fread_reading(3), deallocate_reading(3), scf(4), ExperimentFile(4) write_reading(3)
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