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Top Forums Shell Programming and Scripting Split a non delimited file into columns depending on user input Post 302959934 by RudiC on Sunday 8th of November 2015 04:18:24 AM
Old 11-08-2015
You wanted to enter the substring coordinates in the n,m format. Try this small adaption of Don Cragun's suggestion:
Code:
for ((i=1 ; i <= $2; i++))
  do    echo "Enter starting digit and length of $i string"; IFS="," read a[$i] b[$i] REST
  done 
      
while read line
  do    for ((i=1; i < $2; i++))
          do    printf '%s ' "${line:${a[$i]}:${b[$i]}}"
          done
        printf '%s\n' "${line:${a[$2]}:${b[$2]}}"
  done <$1

@Don Cragun: there seems to be missing the $ sign preceding the i loop variable?
This User Gave Thanks to RudiC For This Post:
 

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PCRE_COPY_NAMED_SUBSTRING(3)				     Library Functions Manual				      PCRE_COPY_NAMED_SUBSTRING(3)

NAME
PCRE - Perl-compatible regular expressions SYNOPSIS
#include <pcre.h> int pcre_copy_named_substring(const pcre *code, const char *subject, int *ovector, int stringcount, const char *stringname, char *buffer, int buffersize); DESCRIPTION
This is a convenience function for extracting a captured substring, identified by name, into a given buffer. The arguments are: code Pattern that was successfully matched subject Subject that has been successfully matched ovector Offset vector that pcre_exec() used stringcount Value returned by pcre_exec() stringname Name of the required substring buffer Buffer to receive the string buffersize Size of buffer The yield is the length of the substring, PCRE_ERROR_NOMEMORY if the buffer was too small, or PCRE_ERROR_NOSUBSTRING if the string name is invalid. There is a complete description of the PCRE native API in the pcreapi page and a description of the POSIX API in the pcreposix page. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWpcre | +--------------------+-----------------+ |Interface Stability | Uncommitted | +--------------------+-----------------+ NOTES
Source for PCRE is available on http://opensolaris.org. PCRE_COPY_NAMED_SUBSTRING(3)
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