Linux shell script to insert new lines based on delimiter count


 
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Old 11-18-2016
Linux shell script to insert new lines based on delimiter count

The input file is a .dat file which is delimited by null (^@ in Linux). On a windows PC it looks something like this (numbers are masked with 1).

Image

The entire file is in one row but it has multiple records - each record contains 80 fields i.e. there are 81 counts of the delimiter (null or ^@). After all of the records there is a trailer of 20 fields delimited by ^@

Please suggest a sh script on how to split the file into multiple rows, after every 81 count of the delimiter ^@

The output should be like
Code:
record 1 comprising of 81 count of ^@
/n record 2 comprising of 81 count of ^@
/n ...
/n trailer record (we need not count the trailer as after the last record's 81 count it will remain as is)

 
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SYSSTAT(5)							Linux User's Manual							SYSSTAT(5)

NAME
sysstat - sysstat configuration file. DESCRIPTION
This file is read by sa1(8) and sa2(8) shell scripts from the sysstat's set of tools. It consists of a sequence of shell variable assign- ments used to configure sysstat logging. The variables and their meanings are: HISTORY The number of days during which a daily data file or a report should be kept. Data files or reports older than this number of days will be removed by the sa2(8) shell script. COMPRESSAFTER Number of days after which daily data files are to be compressed, either by gzip or bzip2. SADC_OPTIONS Options that should be passed to sadc(8). With these options (see sadc(8) manual page), you can select some additional data which are going to be saved in daily data files. These options are used only when a new data file is created. They will be ignored with an already existing one. FILES
/etc/sysstat/sysstat AUTHOR
Sebastien Godard (sysstat <at> orange.fr) SEE ALSO
sadc(8), sa1(8), sa2(8) http://pagesperso-orange.fr/sebastien.godard/ Linux SEPTEMBER 2010 SYSSTAT(5)