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Full Discussion: How to read a delimited string and assign fields to incremented variables?
Top Forums Shell Programming and Scripting How to read a delimited string and assign fields to incremented variables? Post 302538921 by runit on Thursday 14th of July 2011 01:38:10 PM
Old 07-14-2011
How to read a delimited string and assign fields to incremented variables?
How can I read a string delimited on spaces and assign the fields to incremented variables.
For example:
Given $exts= txt dat mov

I want to read in $exts and have "txt" "dat" and "mov" assigned to incremented variables like $ext1, $ext2, etc. I would like to do this in a loop so that I can read in any any given number of extensions.

I have tried the following:
Code:
#!/bin/bash
#replace
exts=txt dat mov
N=0
while x read "$exts" | cut -d" " -f1
	do
	N=$((N+1))
	echo "ext$N = $x"
done


But this does not work. Any suggestions on how to achieve the desire outcome?
Thanks.
Last edited by Franklin52; 07-14-2011 at 05:07 PM.. Reason: Please use code tags for data and code samples, thank you
 

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LEARN ABOUT LINUX

ldap_free_urldesc

LDAP_URL(3)						     Library Functions Manual						       LDAP_URL(3)

NAME

       ldap_is_ldap_url, ldap_url_parse, ldap_free_urldesc - LDAP Uniform Resource Locator routines

LIBRARY

       OpenLDAP LDAP (libldap, -lldap)

SYNOPSIS

       #include <ldap.h>

       int ldap_is_ldap_url( const char *url )

       int ldap_url_parse( const char *url, LDAPURLDesc **ludpp )

       typedef struct ldap_url_desc {
	   char *      lud_scheme;     /* URI scheme */
	   char *      lud_host;       /* LDAP host to contact */
	   int	       lud_port;       /* port on host */
	   char *      lud_dn;	       /* base for search */
	   char **     lud_attrs;      /* list of attributes */
	   int	       lud_scope;      /* a LDAP_SCOPE_... value */
	   char *      lud_filter;     /* LDAP search filter */
	   char **     lud_exts;       /* LDAP extensions */
	   int	       lud_crit_exts;  /* true if any extension is critical */
	   /* may contain additional fields for internal use */
       } LDAPURLDesc;

       void ldap_free_urldesc( LDAPURLDesc *ludp );

DESCRIPTION

       These routines support the use of LDAP URLs (Uniform Resource Locators) as detailed in RFC 4516.  LDAP URLs look like this:

	 ldap://hostport/dn[?attrs[?scope[?filter[?exts]]]]

       where:
	 hostport is a host name with an optional ":portnumber"
	 dn is the search base
	 attrs is a comma separated list of attributes to request
	 scope is one of these three strings:
	   base one sub (default=base)
	 filter is filter
	 exts are recognized set of LDAP and/or API extensions.

       Example:
	 ldap://ldap.example.net/dc=example,dc=net?cn,sn?sub?(cn=*)

       URLs  that  are	wrapped  in  angle-brackets  and/or  preceded by "URL:" are also tolerated.  Alternative LDAP schemes such as ldaps:// and
       ldapi:// may be parsed using the below routines as well.

       ldap_is_ldap_url() returns a non-zero value if url looks like an LDAP URL (as opposed to some other kind of URL).  It  can  be  used  as  a
       quick check for an LDAP URL; the ldap_url_parse() routine should be used if a more thorough check is needed.

       ldap_url_parse() breaks down an LDAP URL passed in url into its component pieces.  If successful, zero is returned, an LDAP URL description
       is allocated, filled in, and ludpp is set to point to it.  If an error occurs, a non-zero URL error code is returned.

       ldap_free_urldesc() should be called to free an LDAP URL description that was obtained from a call to ldap_url_parse().

SEE ALSO

       ldap(3)
       RFC 4516 <http://www.rfc-editor.org/rfc/rfc4516.txt>

ACKNOWLEDGEMENTS

       OpenLDAP Software is developed and maintained by The OpenLDAP Project <http://www.openldap.org/>.  OpenLDAP Software is derived	from  Uni-
       versity of Michigan LDAP 3.3 Release.

OpenLDAP 2.4.25 						    2011/03/26							       LDAP_URL(3)
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