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Full Discussion: How to extract every 6-th character in a line?
Top Forums Shell Programming and Scripting How to extract every 6-th character in a line? Post 303026097 by SANDO on Tuesday 20th of November 2018 05:44:07 AM
Old 11-20-2018
How to extract every 6-th character in a line?
Hi, I have a file consist of 25000 lines and each line has 2 columns 1 column with 6 numeric characters and 2nd one with 45000 numeric characters (not delimited). I want to take every 7th character form the 2nd column, keeping the first column. I made it in several steps but it run for 7 hours to solution. Does anyone has faster solution? Thanks!

Code:
example
File dd0.txt 

100001 1100000000011000011000012222111111111100000000000001122222112221111110012222122222220100000000 ... up to 45000
100002 1100000000011000011000012222111111111100000000000001122222112221111110012222122222220100000000 ... up to 45000

125000 1100000000011000011000012222111111111100000000000001122222112221111110012222122222220100000000 ... up to 45000


result
100001 10001100220120 ... up to 6429
100002 10001100220120 ... up to 6429

125000 10001100220120 ... up to 6429

Last edited by Neo; 11-20-2018 at 08:13 AM..
 

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LEARN ABOUT OSF1

rpc

rpc(5)								File Formats Manual							    rpc(5)

NAME

       rpc - rpc program number database

SYNOPSIS

       /etc/rpc

DESCRIPTION

       The rpc file contains user readable names that can be used in place of rpc program numbers. Each line has the following information:

       name of server for the rpc program
       rpc program number
       aliases

       Items  are separated by any number of blanks and/or tab characters. A "#" indicates the beginning of a comment; characters up to the end of
       the line are not interpreted by routines which search the file.

       Here is an example of the /etc/rpc file from the SunOS System.

       # # rpc	 1.10	87/04/10 # portmapper	  100000  portmap sunrpc rstatd 	100001	rstat rup perfmeter rusersd	   100002   rusers
       nfs	       100003	nfsprog  ypserv 	 100004   ypprog  mountd	  100005   mount  showmount  ypbind	     100007  walld
       100008  rwall shutdown yppasswdd      100009  yppasswd etherstatd     100010  etherstat	rquotad 	100011	 rquotaprog  quota  rquota
       sprayd	       100012	spray  3270_mapper     100013  rje_mapper      100014  selection_svc   100015	selnsvc database_svc   100016 rexd
       100017  rex alis 	   100018  sched	   100019  llockmgr	   100020  nlockmgr	   100021  x25.inr	   100022  statmon
       100023 status	     100024 bootparam	   100026 ypupdated	 100028  ypupdate keyserv	 100029  keyserver

FILES

       /etc/rpc

SEE ALSO

       getrpcent(3)

																	    rpc(5)
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