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Full Discussion: How to print elements between letters bash script?
Top Forums Shell Programming and Scripting How to print elements between letters bash script? Post 302929097 by Chubler_XL on Wednesday 17th of December 2014 04:46:57 PM
Old 12-17-2014
Arrays are not a very good way to store this data you could simplify the code by using strings:

Code:
STR=81UV78UV183UV89800
for val in ${STR//UV/ }
do
   echo $val
done

Anyway here is the method you want - note the final test as you have no terminating UV in your data:

Code:
#!/bin/bash
 
#String 1 (81UV78UV183UV89800) represents content of  this array
#a[0]=8;a[1]=1;a[2]=U;a[3]=V;a[4]=7;a[5]=8;a[6]=U;
#a[7]=V;a[8]=1;a[9]=8;a[10]=3;a[11]=U;a[12]=V;
#a[13]=8;a[14]=9;a[15]=8;a[16]=0;a[17]=0;
a=( 8 1 U V 7 8 U V 1 8 3 U V 8 9 8 0 0 )
 
#String 2 (8U1UVV78UUV18UU3UV89800) represents content of  this array
#a[0]=8;a[1]=U;a[2]=1;a[3]=U;a[4]=V;a[5]=V;a[6]=7;a[7]=8;
#a[8]=U;a[9]=U;a[10]=V;a[11]=1;a[12]=8;a[13]=U;a[14]=U;a[15]=3;a[16]=U;
#a[17]=V;a[18]=8;a[19]=9;a[20]=8;a[21]=0;a[22]=0;
#a=(  8 U 1 U V V 7 8 U U V 1 8 U U 3 U V 8 9 8 0 0 )

for (( i=0; i<${#a[@]}; i++))
do
 if [ "${a[i]}${a[i+1]}" == "UV" ]; then
    ((i++))
    if (( ${#buff} > 0 )); then
           echo ${buff}
           buff=""
    fi
 else
    buff=${buff}${a[i]}
 fi
done
if (( ${#buff} > 0 )); then
   echo ${buff}
fi

Last edited by Chubler_XL; 12-17-2014 at 06:07 PM..
This User Gave Thanks to Chubler_XL For This Post:
Ophiuchus
 

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LEARN ABOUT DEBIAN

clientlib

CLIENTLIB(3)						     Library Functions Manual						      CLIENTLIB(3)

NAME

       clientlib - NNTP clientlib part of InterNetNews library

SYNOPSIS

       extern FILE	    *ser_rd_fp;
       extern FILE	    *ser_wr_fp;
       extern char	    ser_line[];

       char *
       getserverbyfile(file)
	   char 	    *file;

       int
       server_init(host)
	   char 	    *host;

       int
       handle_server_response(response, host)
	   int		    reponse;
	   char 	    *host;

       void
       put_server(text)
	   char 	    *text;

       int
       get_server(buff, buffsize)
	   char 	    *buff;
	   int		    buffsize;

       void
       close_server()

DESCRIPTION

       The  routines  described  in this manual page are part of the InterNetNews library, libinn(3).  They are replacements for the ``clientlib''
       part of the NNTP distribution, and are intended to be used in building programs like rrn.

       Getserverbyfile calls GetConfigValue to get the name of the local NNTP server.  It returns a pointer to static space.  The  file  parameter
       is ignored.

       Server_init  opens a connect to the NNTP server at the specified host.  It returns the server's response code or -1 on error.  If a connec-
       tion was made, then ser_rd_fp and ser_wr_fp can be used to read from and write to the server, respectively, and ser_line will  contain  the
       server's response.  Ser_line can also be used in other routines.

       Handle_server_response  decodes	the  response,	which comes from the server on host.  If the client is authorized, it returns 0.  A client
       that is only allowed to read is authorized, but handle_server_response will print a message on the standard output.  If the client  is  not
       authorized to talk to the server, then a message is printed and the routine returns -1.

       Put_server sends the text in buff to the server, adding the necessary NNTP line terminators, and flushing the I/O buffer.

       Get_server reads a line of text from the server into buff, reading at most buffsize characters.	Any trailing 
 terminators are stripped
       off.  Get_server returns -1 on error.

       Close_server sends a ``quit'' command to the server and closes the connection.

HISTORY

       Written by Rich $alz <rsalz@uunet.uu.net> for InterNetNews.  This is revision 42, dated 1997-08-04.

SEE ALSO

       libinn(3).

																      CLIENTLIB(3)
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