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Full Discussion: File splitting according to the length of the fields
Top Forums Shell Programming and Scripting File splitting according to the length of the fields Post 302946554 by Akshay Hegde on Wednesday 10th of June 2015 07:45:27 AM
Old 06-10-2015
This may help you

Code:
[akshay@localhost tmp]$ cat description
Field Name	Length	Start Position
ADJ-TYPE-CODE	1	1
ALLOW-AMT	11	2
CAP-SRVC-NO	1	13
BILL-AMT	11	14

Code:
[akshay@localhost tmp]$ cat datafile 
R-0000017611N-00000350001095ANZU01
A00000017611N000000350001095ANZU02
R-0000019427N-00000265001202BGYI03
R-0000005977N-00000092001202BGYI03
R-0000017195N-00000995001353B1IZ03
A00000099500N000000995001353B1IZ04
R-0000258547N-00002266002019AXAJ01
A00000258547N000002266002019AXAJ02
R-0000012277N-00000216002026BLCF03
A00000012277N000000216002026BLCF04

Code:
[akshay@localhost tmp]$ cat extract.awk
function extract(str,field,i)
{ 
	for(i=1; i<=c; i++)
	{
		field = substr($0,A[i,3],A[i,2])  
		str   = str ? str OFS field : field
	}
		return str		
}

FNR==NR{
		if(NR==1)next
		hdr = hdr ? hdr OFS $1 : $1 	
		c++
		for(i=2; i<=NF; i++)A[c,i]=$i
		next
}

{
	print FNR==1 ? hdr RS extract() : extract()
}

Code:
[akshay@localhost tmp]$ awk -vOFS="," -f extract.awk description datafile 
ADJ-TYPE-CODE,ALLOW-AMT,CAP-SRVC-NO,BILL-AMT
R,-0000017611,N,-0000035000
A,00000017611,N,00000035000
R,-0000019427,N,-0000026500
R,-0000005977,N,-0000009200
R,-0000017195,N,-0000099500
A,00000099500,N,00000099500
R,-0000258547,N,-0000226600
A,00000258547,N,00000226600
R,-0000012277,N,-0000021600
A,00000012277,N,00000021600

 

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LEARN ABOUT DEBIAN

rdma_post_recv

RDMA_POST_RECV(3)					   Librdmacm Programmer's Manual					 RDMA_POST_RECV(3)

NAME

       rdma_post_recv - post a work request to receive an incoming message.

SYNOPSIS

       #include <rdma/rdma_verbs.h>

       int rdma_post_recv (struct rdma_cm_id *id, void *context, void *addr, size_t length, struct ibv_mr *mr);

ARGUMENTS

       id	   A reference to a communication identifier where the message buffer will be posted.

       context	   User-defined context associated with the request.

       addr	   The address of the memory buffer to post.

       length	   The length of the memory buffer.

       mr	   A registered memory region associated with the posted buffer.

DESCRIPTION

       Posts a work request to the receive queue of the queue pair associated with the rdma_cm_id.  The posted buffer will be queued to receive an
       incoming message sent by the remote peer.

RETURN VALUE

       Returns 0 on success, or -1 on error.  If an error occurs, errno will be set to indicate the failure reason.

NOTES

       The user is responsible for ensuring that a receive buffer is posted and large enough to contain all sent data before the  peer	posts  the
       corresponding send message.  The message buffer must have been registered before being posted, with the mr parameter referencing the regis-
       tration.  The buffer must remain registered until the receive completes.

       Messages may be posted to an rdma_cm_id only after a queue pair has been associated with it.  A queue pair is bound to an rdma_cm_id  after
       calling rdma_create_ep or rdma_create_qp, if the rdma_cm_id is allocated using rdma_create_id.

       The  user-defined  context associated with the receive request will be returned to the user through the work completion wr_id, work request
       identifier, field.

SEE ALSO

       rdma_cm(7), rdma_create_id(3), rdma_create_ep(3), rdma_create_qp(3), rdma_reg_read(3), ibv_reg_mr(3), ibv_dereg_mr(3),  rdma_post_recvv(3),
       rdma_post_send(3)

librdmacm							    2010-07-19							 RDMA_POST_RECV(3)
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