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Full Discussion: Store values from a file into an array variable in Shell
Top Forums Shell Programming and Scripting Store values from a file into an array variable in Shell Post 302612011 by ygemici on Saturday 24th of March 2012 08:06:53 AM
Old 03-24-2012
Quote:
Originally Posted by ezhil01
Dear All,

I have been trying to do a simple task of extracting 2 fields from the file (3 rows) and store it in an array variable. I tried with:

#! /bin/bash
ch=`cut -f10 tmp.txt`
counter=0

for p in $pid
do
c=${ch[$counter]}
echo "$c ..$counter"
counter=$((counter+1))
done

The filed 10 has 3 values: 14,19,6 in tmp.txt file. When I execute, I am getting:

14
19
6 ..0
..1
..2

but I would like to have:

14 ..0
19 ..1
6 ..2

Could you please help me to fix this?

Thanks in advance,
Ezhil
Code:
# cat justdoit
#!/bin/bash
ch=($(cut -d" " -f10 tmp.txt|tr -s "," " "))
counter=0
for((i=0;i<=${#ch};i++)); do
c=${ch[$counter]}
echo "$c ..$counter"
((counter++))
done

Code:
# ./justdoit
14 ..0
19 ..1
6 ..2

 

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LEARN ABOUT DEBIAN

ost_counter

ost::Counter< T >(3)					     Library Functions Manual					      ost::Counter< T >(3)

NAME

       ost::Counter< T > -

       The counter template is used for generic objects which act as automatic counters.

SYNOPSIS

       #include <counter.h>

   Public Member Functions
       Counter ()
	   Construct and initialize a counter to zero.
       Counter (const Counter &counter)
	   Construct a counter with an initial value set for another counter.
       Counter (T initial)
	   Construct a counter with an initial value of the specified data type.
       T & operator= (T c)
       operator T ()

   Protected Attributes
       T count

Detailed Description
   template<typename T>class ost::Counter< T >
       The counter template is used for generic objects which act as automatic counters.

       Each time the object is accessed, the underlying counted data type is incremented.

       Author:
	   David Sugar dyfet@gnutelephony.org Automatic counter template class.

Constructor &; Destructor Documentation
   template<typename T > ost::Counter< T >::Counter () [inline]
       Construct and initialize a counter to zero.

       References ost::Counter< T >::count.

   template<typename T > ost::Counter< T >::Counter (const Counter< T > &counter) [inline]
       Construct a counter with an initial value set for another counter. Parameters:
	   counter to copy from.

       References ost::Counter< T >::count.

   template<typename T > ost::Counter< T >::Counter (Tinitial) [inline]
       Construct a counter with an initial value of the specified data type. Parameters:
	   initial value to set.

       References ost::Counter< T >::count.

Member Function Documentation
   template<typename T > ost::Counter< T >::operator T () [inline]
       References ost::Counter< T >::count.

   template<typename T > T& ost::Counter< T >::operator= (Tc) [inline]
Member Data Documentation
   template<typename T > T ost::Counter< T >::count [protected]
       Referenced by ost::Counter< T >::Counter(), and ost::Counter< T >::operator T().

Author
       Generated automatically by Doxygen for GNU CommonC++ from the source code.

GNU CommonC++							  Sat Jun 23 2012					      ost::Counter< T >(3)
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